This comparison is based on the manufacturer specifications we have read, on the dates given below. It rests on those sourced figures and not on hands-on testing.
The lowest-priced machine here against the oldest design
The Stilosa is the lowest-priced machine on this site's own catalog ordering, which is what "cheapest" in this page's title means: a position in this site's own list, not a number checked at a seller. No price appears anywhere below. The Classic Pro carries a design that traces back decades further than the Stilosa's, and this page sets what each maker states against the other, line by line, without ranking either one above it.
What the Stilosa does not state
The width, depth and height figures are all absent at source for the Stilosa: its maker's page prints a "13.5x8.07x11.22" figure with no unit and no axis label, and its manual, read in full, prints no dimension table at all. This page states that absence rather than assigning the three numbers to width, depth and height as a guess, and draws no footprint for the machine as a result. The Classic Pro's listing states its three dimensions directly, from a page read 11 September 2026, but this page does not compare them to nothing, so no size line appears below at all.
Ten figures both machines state
Weight states 3,905 grams for the Stilosa, read 6 September 2026, and 8,100 grams for the Classic Pro, read 11 September 2026, more than double by this page's own division. Voltage states 120 volts for both, read 6 September 2026 for the Stilosa and 3 September 2026 for the Classic Pro. Watts states 1,100 for the Stilosa against 1,350 for the Classic Pro, read 6 September and 11 September 2026 respectively; current draw is not printed by either maker and is derived from watts and voltage rather than read as a figure, 9.2 amps for the Stilosa and 11.3 for the Classic Pro.
Water tank size states 1 litre for the Stilosa, printed on its page as 33.81 fluid ounces, and 2.1 litres for the Classic Pro, printed on a distributor page as 72 fluid ounces, read 6 September 2026. Filling in place states yes for both: the Stilosa's manual, page 7, states the tank "can also be filled without extracting it, by pouring the water directly from a jug," and the Classic Pro's manual, page 17, states to "Remove the water tank cover" and "fill it with cold water up to the MAX level of the tank."
Boiler type states a single stainless steel boiler for the Stilosa, per its maker's own page, and a single lead-free brass boiler for the Classic Pro, read 6 September 2026. That brass line is not a reading off Gaggia's own page or manual: this page takes it from the distributor's storefront page for the Classic Pro, and attributes it that way rather than folding it into a plain manufacturer claim.
Pump pressure states 15 for the Stilosa, per its maker, and a 15 bar Italian-made Ulka pump with a 9 bar OPV for the Classic Pro, per a distributor page. Portafilter size is not one of the ten: it is marked absent at source for the Stilosa, since its maker's page describes it only as an "ergonomic dual-filter portafilter," with no diameter printed, rather than a millimetre figure. The Classic Pro's 58 millimetres is still read from the distributor page, so this is one machine stating a number against the other stating none, not two figures side by side.
The built-in grinder field states false for both, and the link to the maker's manual resolves for both: each machine's own instruction manual, downloaded from its maker's site and read in full.
What this page does not settle either way
The Classic Pro's side of this comparison also carries two proxy facts rather than page readings for this SKU. A three-way commercial solenoid valve and a removable tank in the 2 to 2.1 litre range are drawn from a third-party source describing the Classic line rather than this exact SKU's own page, and a brass boiler and group head across the current Classic line come from a different third-party review with the same limit. This page names both as described features of the line, not as confirmed statements for the RI9380 on its own.
Gaggia's own US-specific model naming shifts between its manual-machine catalog pages, and the current gaggia.com page for this exact SKU was not directly confirmed live as part of this site's research; RI9380 is the SKU consistently tied to Classic Pro across the manufacturer manual and third-party reviews this page draws from, and this page names that link rather than treating it as settled beyond question. None of that naming question changes any of the ten figures above, which come from each machine's own manual or maker's page, or, for the Classic Pro's tank, boiler, pump and portafilter lines, the distributor page named above, independent of which catalog name currently sits over the SKU.
