I only have experience with the Edge Juice with Attitude and it works pretty well. Fairly easy to install, I think it took me and a buddy like 4 or so hour and trust me we weren't working hard - we would work for about 10 mins then break for beer, then repeat... we installed one on his 99 and it woke it up pretty good. I liked the fact that with a programmer you can on the fly adjust the power levels and the fact that the edge brought in with it gauges so we didn't have to install gauges as well because it displays all information and we can set limits and warnings to just about everything. Pretty nice product.
