I've tried several. I like the 2.4GHz setups for range and features.
I have 2 Pixel (goes by several other rebranded names for same model) remote releases. One is the TW-282 wireless, other is the wired version (same features minus wireless). Bonus is they all plug into eachother as backup if one dies (wired).
I've used this setup for 2-3 years happily. Low light, fireworks, star trails, etc. One limitation of these (and several other RR's) is the gap between shots. Doing star trails i didn't like the gap in the star trail. Minimum 1 second (no LENR obviously).
That got me looking for something new and am trying out the new triggertrap setup (v2 i think). So far it's worked well. My goal was to use iphone/ipod touch and ipad/iphone to control wireless. Honestly i find it more useful/easy to just use my iphone and do it wired. Eventually might go wireless, but so far it's been easy since i always have my phone with me!
I did one night shot at Mt. Rainier for star trails and really appreciated the wireless option of the Pixel setup (mosquitoes and flies at lake's edge). I was 20+ feet away doing other fun things (playing w/ GF's camera and light painting w/ her), while it shot away the series for star trails. Using the new TT setup i'd definitely plan to go wireless if doing similar. Good excuse to play w/ that setup anyway.
I know the MC30/MC36 are great setups, but at the price i still feel the after market options have better features (like wireless), for a LOT less...