Newbie - Which USED Amp & Preamp for under $2500


My preamp has seen better days and is sounding awful. My amp is pretty weak too. I have $2500 to spend and I need help. I've been looking at the following, any advice would help:

PREAMPS:
Audio Research SP17L Tube Preamp
Quad QC24
Arcam c30

AMPS:
Arcam PI monoblocks
Conrad Johnson MF 2250
Bel Canto Evo 200.2
Quad 99
Perraux 200P
Refurbished McCormack DNA 125

Below is my current setup. I plan on upgrading my speakers in the near future, so I'll want something that will work now and later:

Hafler 9130 amp (x2)
Adcom GTP 500 Preamp
B&W 602 series 3 Speakers

Thanks!
mmrump
You can thank Kurt_Tank now or you can thank him later.
What ever you do HEED his advise.
I agree you should get an integrated amp instead of separetes, ICs get too costly...

however, if you do buy a power amp do not buy the Quad 99 but the 909 instead, it is supposed to be the better of the two...
As Kurt_Tank mentioned, it was advice that I didn't want to hear, however I'm glad he mentioned it. I'm not in the habit of continually swapping gear and I'd rather have more options when shopping for speakers. It looks I need to start researching Speakers, on which you'll probably see another thread from me shortly asking for advice.
Thanks everyone for your replies. I've been researching each and every suggestion posted.
LFD integrated is whats happening now or the good old Mac piece will be just fine.Easy to move if they dont move you,good luck,Bob
I agree with the - SPEAKERS FIRST- mantra here. That really decides what all of the upstream gear should be. I have a Magnepan based system, which I love. But that means powerful amps, and then certain types of mellow upstream components (tube pre, mellow turntable/arm/cartridge combo, warmish DAC) to keep the system from being too bright.

One of my audio-geek buddies has B&W 801's and he has all SS gear upstream, Mac 501's and an Bryston Pre. That's to keep his system from getting too warm. With my pre amp in his system, it's muddy, with his preamp in my system it's harsh.

But they each sound great on their own.

That was long winded!! Sorry. Pick your speakers first, then work backwards.