Ok guys so im thinking about my next mod already and im stuck. I play alot of woods ball and some speed depending on what our group feels like playing at the time. So should i get the R/T or the E-Grip? One of my friends has the R/T and it seems like it works pretty good. Anyone ever have any problems with their E-Grip? How long will the battery last, and is it a item you should probably bring in to have installed? Thanks for any help in advance guys.