OnHi61 is right; any number of integrateds with more juice than 70epc.
For example, there is a Plinius 9200 up here now that could be had for around your pricepoint that it rated at 200 wpc. (No connection to seller; I mention it as an example only because I've always wanted to try a Plinius.)
Shumph is right, of course, that how much juice you need depends on your listening habits and speakers, though the flexibility more juice provides is very welcome, if you want to try more speakers. (My hunch is your current 91db speakers would welcome a bit of power.)
As for for "going integrated," I went from separates to an integrated and love it. I sometimes miss wonking around with separates, but the simplicity and value of the ntegrated route is very nice too.