When the Genos first arrived, we had no Genos speaker stock, so I hooked up Tyros 5 speakers to our display unit.
It wasn't until we actually had Genos speakers in stock that I discovered how poor the Tyros speakers were.... the Genos speakers are miles clearer; but at the cost of no true subwoofer (the 2.1 set contains more of a midwoofer; you're supposed to purchase an actual sub to go with it (KSSW100) to really add that bass depth, but the clarity is amazing, and sounds fine without the additional KSSW sub.
Not sure why you're getting low volumes though; when I demo ours, I have to turn the volume down to halfway because it's too loud! Have you turned the front and rear 'volumes' to max?
A pair of Yamaha HS7's or 8's would be slightly clearer (but then you *definitely* need that subwoofer)
If you need 2000w of speaker output:
A pair of QSC K10's (original, not mark 2... the mark 2's lack the necessary bass reflex) would be supreme; as would any of the newer JBL Eon's (but both these options would require a $1500-$2000 speaker budget); the best speakers (IMO) that you could get are the QSC KWW122, but at a $3k budget.