I don't think it matter does it? our amp would suit you just fine if you ever started gigging again, a pair of Genelecs wouldn't. Also, the sound of your bass unprocessed into studio monitors will sound very, very different to the relatively colored Aguilar.
To the OP, whilst it's almost definitely possible to have an amp that's unnecessarily big, it's completely impossible to have an amp that's too loud. They all have volume controls and they all go counter clockwise. The overwhelming sound was the bassist's fault, not the amp's. I'd love a small city car for when I don't need my truck in the same way most people would love a myriad of rigs for every situation but the reality is that money forces most of us to simply have one rig that's big enough for our biggest gigs and therefore far too big for the smaller stuff. The trick is simply to turn it down! You're right what you've said though IME. For one, a lot of us could certainly do with listening to the band rather than the individual instruments. I always cringe slightly when I see threads like 'how can I compete with my guitarist?'. This isn't a sport, it's not a competition, it's a team exercise.
Most of us could probably manage with a 100W Peavey combo. But to use my previous car analogy most Ferrari owners could probably manage with a £300 Vauxhall. Where's the fun in that?!