The I have both the UA and Softube versions of the Trident... gotta say they both sound very similar, but Softube added a saturation feature on theirs... it also can be had for cheaper than the UA version so I'll declare it the winner at the moment...
You can get it here for even cheaper http://www.jrrshop.com/ Enter in the discount code 'group' & you'll get 15% off ... Good until the end of Feb I believe!!