Gerald,
13' is plenty high. You can even open your hood and raise the car near the top of the limits. The legs on my lift are just under 7' tall, but that side of my garage is 16' to the ceiling.
Each type of lift has its own relative strengths and weaknesses. For suspension and bodywork, the scissor and twin post are probably the best bet. For undercar maintenance and 2 car stacking, the 4 post is best. A twin post is next, but stacking vehicles is usually not recommended. If you have a jack bridge, the 4 post becomes quite satisfactory for suspension work. Personally, I would stay away from the scissor type lift because it limits tranny access and floor space, but that's just my opinion. For production mechanic work, you can't beat the twin post. However, they require the most headroom and foundation work of all.