Without any knowledge of the specific demands on an amp imposed by your proposed Gallo set-up, I would note that the Onkyo 5010 is a very nice sounding amp. The published specs don't make a ton of sense for a SS amp (they do suggest that an 8 ohm load is required), but it's a very good sounding amp that I've occasionally used with Ohms and little Maggies to very good effect.
Last I looked, this amp could be had new for about $250 on-line.
Last I looked, this amp could be had new for about $250 on-line.