I like my 3pk alot.. I don't think I'ld like the DX3r very much, it looks very unbalanced to me.. 4pk is a good looking trans, but have no experiance with em.

2 more you might add to your list to try out. Nomadio Sensor and Nomadio React. I have friend with a react and I like it a bunch.. And, would get one if I didn't like the 3pk so much.. The sensor looks akward, but I've heard they are well balanced..

Nomadio's are getting hard to find.. Used is about the only way to find one. I have heard Nomadio is starting to manufacture these again.. They took about a year of from making them for some reason. Too many military contracts ro some junk like that..

If you like the feel of the DX3r you might try the DX3s. Same basic shape and feel, but much much cheaper. I know it doesn't offer on board telem, but in a race i don't think your gonna be looking at the screen that enough for that kinda stuff anyway..