The Sea Ray Aft Cabin 370 1997 vs Sea Ray Express Cruiser 390 1990 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Sea Ray Express Cruiser 390 1990 measures 42,0 feet overall (1990), giving it roughly 3,8 additional feet of deck space compared to the Sea Ray Aft Cabin 370 1997 at 38,2 feet (1997). Weight tells a clearer story for trailering families: the Sea Ray Aft Cabin 370 1997 tips the scales at 24 000 lbs — 7 600 lbs more than the Sea Ray Express Cruiser 390 1990 at 16 400 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 370 hp for the Sea Ray Aft Cabin 370 1997 and 370 hp for the Sea Ray Express Cruiser 390 1990. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 3 gal and 3 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Sea Ray Express Cruiser 390 1990 is rated for 12 passengers, while the Sea Ray Aft Cabin 370 1997 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray Express Cruiser 390 1990 could be the deciding factor.
Bottom line: Choose the Sea Ray Express Cruiser 390 1990 if your priority is putting more people on the water — it handles 12 passengers and at 42,0 ft it has the deck room to back that rating up comfortably. The Sea Ray Aft Cabin 370 1997 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 11 that costs less to run day-to-day.