Personally I was very impressed with the Mr. Sailor. I'n fact I refused to by new stp's when I was trying all of them but instead opted to make my own using the Mr. Sailor that came from the Fitz I bought about 10 months ago. I don't wear it very often but it is soft, and I could see a rough harness causing damage. I personally just made a pouch that holds the balls with a hold in the front for the shaft and a overlap in the back (so I can pull the stp out, not that I ever got that far). It's got a wait band so I just put it on under my underwear. I feel theres less chance of it getting ruined by this kind of harness but I haven't worn it constantly, so I don't know for sure.
With regards to the packer itself. The only choices (due to shipping issues) that I really had was between the Mr. Limpy and the Sailor, so I went for the sailor because I wanted something that at least looked somewhat realistic for cheap. The feel of the Sailor is good and I like the details on it. It also lays nice under my pants and doesn't give off the impression of an erection. I got the 4inch as well.
Over all I've been very pleased with the sailor but it's durability, due to it's very soft nature is certainly something to keep in mind.