If your budget is $500-$2,000, you could do a lot better with speakers. Go to Audiogon and poke around - you can buy into the high end. I love Magnepan, Quad, Vandersteen, PSB, Klipsch (heritage models), and there are many other good ones. If you can go audiophile, go audiophile. You won't regret it.
Do not worry about the Watts from an amp. A lot of the figures are fudged and you don't need hundreds to power most speakers. If you need to drive a tough load, like a ribbon or planar, you do need the power. But only worry about that if you go for Magnepans or Apogees. Everything else will make your ears bleed and summon the police with 50W-100W. I even got the ESS-AMT1s up to uncomfortable levels with the Moth Si2A3. It puts out around 3W.
Keep in mind that it's logarithymic. If you want to double the sound level of 1W you need 10W. Double 10W needs 100W. So going from 100W to 200W won't be that noticeable. Also, amps aren't always putting out peak power. A 100W amp might loaf along at 15W or 20W at normal listening levels.
$2,000 is plenty to get you into excellent sound. For example, I got Quad ESL-63s for about $700, a Conrad-Johnson MV52 for about the same and a Conrad-Johnson PV-2 for around $300. They sound great. Right now, I'm using the MV52 with a pair of ProAc Response 2.5 clones I spent about $1,000 on.
But there are many other great combos in this range. The older Conrad-Johnson EL34-based power amps deliver classic tube sound. So do the Dynaco ST70 amps which are affordable. You could also pick up a classic McIntosh integrated or solid state power amp in your budget. Other good solid state amps are made by NAD, Adcom, Krell, Pass Labs, Bryston, and many others. Do not be afraid to buy used, either. These are well made and hold resale value - you'll be able to get your money out. Same goes for the speakers.
I think you should spend some time researching speakers. Consider your room size and the kind of music you play. You will find some excellent speakers to fit you. Then pick an amp/preamp or integrated that works well with your speakers.
Skip the whole HT thing. Stereo works great for video and you'll be able to enjoy your music more, too.