I for one dislike slow start anything. Lawn mowers, lights... you name it.
I find my fast start lamp controllers and wall switches on ebay. Firstly, make sure you are looking at used equipment, then peskily ask each seller if they are fast start or not if they don't know for sure, move on to another. Another option is the old resellers like Radio Shack which went under the moniker Plug 'n Power. Although I don't know if they resold wall switches.