Since my interest in Waterguns is now mainly intellectual(generaly no water battles anymore), I am now more amused/interested by other brands other than SS purely for the brechtian alienation effect among mainstream soakers. I believe some have already posted links to stores that sell them, but Wing Sang is the actual manufacturer:

Water fun Line

Super Drencher Line

Some models are copied designs of other brands, while others are fairly original. Some models seem state of the art in the squirt pistol weight class. Personaly, I really would not mind to have that M16 + MP5 AirPressure soaker in my eclectic collection.

*Note*: Its clear that none of them are generaly as good in performance as WW or SS, so please no unecessary posts about stating the obvious.