Tim,
I've been with eclipse since march 04, since then I've put it in my house, my customer site office and our main offices.
Never had any problems, and it's always worked. No limits at all.
Have a look at
http://www.eclipsebroadband.com for them, and
http://www.adslguide.org for others.
Cheers!
Scott
[Edited on 2-1-2005 by Scottch]