I have the Phottix Strato II Multi 5 in 1 trigger set. I got it for about $100 in April and it works great as a wired remote or as a wireless trigger to about 100+ yards. I had tried the Vivitar on my D90 last year and the Phottix is very much superior in quality and function. There are others out there with preferrences for other models but I am very happy with my choice of the Strato II and the price.
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol