how much current do you charge at? I use an old pc power suppy- there small and do the job, ive charged 360's lipos at 6.6amps with no issues, its never even got slightly warm after about 4 years of use.

I think alot of people buy the big white technobots power supplys because everyone else has one... i think there abit OTT unless you need to draw around 40a (i.e. if your charging big SLA's such as 17ah hawkers, or supplying multiple chargers at the same time etc)