First one that I had was the N52 - I liked this pad very much and the only reason I upgraded was because the new one came out which has better keys and the backlighting. This pad cost about $30.
The new ad is the N52te - I like this pad even more then the first one. Buttons are much nicer then the original and the wrist rest is a much better material. I like that it glows blue for the backlighting which you can turn off if you want to, but it matches my keyboard and mouse which is cool. I am still not use to the new programming interface for the new pad, but that is just a matter of time messing around with it. I have it working for now which is all that matter to me and I will experiment more in the future when I get time.
Yes, I took the pictures from Newegg.
Here is the first one that I had which is the Belkin Nostromo N52
Here is the one I have now which is the Belkin Nostromo N52 Tournament Edition