Is it possible to buy a decent tube amplifier in the $2000-3000 range?

I also recommend Primaluna. You can frequently find used product online. I would look for the dialogue series over prologue. I think echo audio in Portland had a great deal on some mono blocks. You could buy one and use in stereo or buy both. They do sell online but don’t always ship depending on the product. I have a dialogue one integrated and I love it. 

I'm running a Conrad Johnson Premier 11A and with the right tubes I am very happy with it!

Yes, for a bit over $3K, Don Sachs produces an excellent KT88-based amp that is sure to please.  Google "Don Sachs" and check out his Kootenai amplifier.  I recall it has about 60 wpc and will drive most any speakers you have.  Check it out.  

Check out these bad boys, a pair of M-125 monoblocks, http://www.tubes4hifi.com/bob.htm
Scroll down to the bottom for the M-125s. Or yes, as whitestix says, go with one of Don Sach's KT-88 amps.
http://www.dsachsconsulting.com/custom%20kt88%20tube%20amp.html
Either choice will push Maggies to the limit, no mean feat.