Best Bang 4 the $ Intergrated Amp

Hard core bang for the buck... Audio Refinement Complete. This is surprisingly good and cheap. 50 watts to 8 & 90 watts to 4. In the same league in sound quality, but a bit more power is Musical fidelity A3cr or 3.2. A clear step up, still without being crazy would be a Coda.

I'd send him to the local discount electronics shop, off the shelf mass produced integrated amps can sound pretty darn good (to the point of making you wonder why you spent more on your gear). Perhaps he could even bring in his speakers and listen to them connected to the shops demo amps.
I moved up a notch in speakers and gave my old units to a relative, he drove them with his run of the mill Yamaha integrated and I thought they sounded great.
If he gets things to the level of "I'm looking for this or that type of presentation" then it will be time to be more persnickety about which integrated amp he wants.

Seabreeze why not contact Silverline and ask them for a suggestion with the price range he has , they should have a sense of what matches well.

I have Preludes (love 'em...although the price went up to $1499 recently, and I strongly suggest a used REL or other high quality sub to make them really sing) and the dude who inspired me to get them uses a Vincent SV236...I think the Shengya A-216 is cheaper and likely a GREAT amp (Grant Audio has these). I'd suggest a Kavent SP320 (similar to Vincent and Shengya, and built like a tank...I have one of their preamps) but they're not available currrently, or perhaps ever again.