I spent a lot of time researching lifts before I bought one in 2005. Personally, for safety sake, I like the "collar over post" design. Also, I preferred to source out an American made lift, using American, not Chinese steel, again, for quality/safety sake. I ended up with a 4 post lift that I ordered from America's Pride. It is made by Gemini lifts in Texas. Here are a couple of shots:

Good luck.