Nerd,
What components do you currently own and intend to use in a future system? Do you have a dedicated CD player, DVD player, VCR? Depending on your answer, there are some other possibilities concerning a "stepped" approach toward a future HT/surround system.
Instead of buying a pre/pro and amp now, you could buy a quality integrated amp (especially one with an HT/processor bypass loop) to power your Paradigms now and have a good 2 channel system. You could then add HT in the future by getting a good HT receiver that has pre-amp outs and you could use it to power your center channel, surrounds, LFE subwoofer and support your digital source components.
If you do it this way, you won't necessarily have to sacrifice any 2-channel sound quality today and then when you add the HT receiver in the future, you will also have good surround sound quality.
There are many great integrated amps on the market today for well under your $2000 budget.
This type of setup has been discussed many times here and on the AudioAsylum forum. Look for subjects like "combining 2-channel and HT". You can also do a forum search using my user name "Reubent" to find my previous comments on this type of setup.
Of course, another option would be to buy a quality receiver now and then buy a quality integrated amp (or power amp) in the furture to improve the 2-channel music portion of the system. The B&K AVR-202 at about $750-900 used would be an excellent choice. Or you could move up the B&K line and still be within your $2k budget. Heck, you might like these receivers so much that you won't feel compelled to spend any more money in the future!
Enjoy,
TIC