I really like my gralab 545 w/ footswitch. I use it with my aristo cold light head with no problems what so ever. I also very much like the kearsarge timers, but i prefer the gralab because footswitches are cheap! you can just buy a tape recorder footswitch for less than 10$ off ebay. it beats spending 60 on a treadlite (even though they feel great under foot)
-Austin