The good 'ole Interstate MT-35 works pretty well for the T4R in North LA. Not too cold, not too hot. Plus, I do not have a winch (yet, for God sake, I just need the time to mount the D@#$ thing) or auxilary audio system, but I do have a direct-wired 900W Inverter and Hella 500s that get used pretty regularly. Cheap and efficient, but I have to add that I have very little extra money.