Best $3,000 speaker/amp combo?

Used Alon V MKIIs recently sold here for around $1K they cannot be beat at that price. They will work great with the type of music you prefer.

I might have two very different recommendations:
1. Yes, Moon i5 and Devore Gibbon 8. Or Naim instead of Simaudio.
2. Rowland Concentra - usually about $2500. And some speakers for $500 for now; upgrade a little later. Getting Rowland may be worth it.

We've whittled it down to exactly 15,752 options.

Used NAD M3 and some new and improved BOSE 901 series 6 mk2's.

At the risk of effectively saying, "you should buy what I have," I will say that my office system, though in a slightly smaller room, makes really nice music. Naim NAIT 5i with Totem Model 1 signatures. Your budget is sufficient to replicate this system if you buy used on the 'Gon.

Happy Listening.