Hello, first post here. I'm looking for the "best" amp I can buy for $500 (ish), new or used. Yeah I know, "best" is subjective, but I'll try to qualify things.
My listening room is also my den. It's about 15x30x9, so it's a decent sized room. My musical tastes lean towards electronic music, so I need an amp that can handle bass and stay tight and clean. However, I am not a one-genre type person, I also enjoy jazz, blues, acoustic recordings, rock, etc. About the only type of music I dislike is country.
I am recently married, so I do have the WAF to factor into everything

However, I did just buy some Sennheiser 280 Pro headphones, and built a Cmoy amp to power them. When she listened to Dido on them, her eyes got all big and she was enthralled, never having heard anything close to that quality of sound (truth be told, I hadn't either). So..... if I can get a decent sounding intro-to-hi-fi system setup for $1000 or less, and she likes the sound, I can probably expand later on. However, if I drop a grand and it doesn't sound much better than my 13 year old integrated Kenwood receiver and KLH bookshelves, I'll have a hell of a time justifying more of a cash outlay later

OK, enough rambling. I've been doing quite a bit of reading here and elsewhere online, looking for "great"(good?) sounding amps which won't break the bank. I don't have any problems with buying used, and I figure I can get the most for my money that way anyway. My short list so far is:
Hafler (any of the "P series")
Anthem (MCA mkII)
ATI (1202, 1802)
old Bryston 3b
Adcom (555 series)
I'd like quite a bit of power so I have a lot of headroom, and bridgeablitly is a big plus, as I can use the amp as my sub amp later and buy a better sounding amp to run my mains.
I'm a DIY kind of guy, and have wood working tools, so I'm going to build a pair of Zaph Audio Seas L18 / Seas 27TBFCG
http://www.zaphaudio.com/audio-speaker17.htmlspeakers for my mains. Perhaps the metal cone will play a factor is an amp to power them? I've read the Hafler's have a warm sound and might compliment the drivers?
I will build a sub also, and I have a crappy old-school Kicker 12 I can try for now and see if it helps, or just muddies up the sound compared to the Seas and a decent amp. I suspect it will sound like crap compared to what I hope to purchase.
Also, I'm not in any real hurry to get an amp, as I haven't even built the speakers yet. So, I can afford to take my time and look for a good deal.
Thanks for any amp ideas you can throw my way,
Mike