For the best value for your money, I would go with the Hydrapress. It's around $170 and I have heard nothing but great reviews on it. I do not have one personally since I work at a proshop and we use the Sure-loc X-press. Same basic design is used on the Hydrapress but alot cheaper. Sureloc costs around $500 vs. the Hydrapress around $170. If I was to buy one this would be the one I would get.
http://www.hydra-press.com/index.htm
Hope this helps and Good luck.