i know pcm4less sucks and idk about the other one, get a blackbear tune...cheap and from what ive heard very good!
I'll elaborate a little more on the tune I saw from TSP. A friend of a friend heard that I had EFILive and was tweaking my truck. He asked me to add a little timing to his car. I wanted to log it first, so we went for a drive and looked at it. After I quizzed him a little, I found out that the tune on the car now is one of TSP's custom dyno tunes that they send out as part of their cam packages. You buy one of their cams and they send you a pcm that is loaded with a tune they have "perfected" through dyno tuning. I realize that every motor is different, but this tune is waaaaay off. To put it simply, the car runs like crap.Go with a custom dyno tune if you can.