Rich,I have a Roadsmith on my 05 Wing which was installed this past July.
As mentioned above, RS does offer the accu-ride (and quite a few other options) although I don't have that option on my trike. Personally, you can't go wrong with either the Hannigan or Roadsmith. It basically comes down to which body style you like the best. Both units have the longer wheelbase which definitely adds to the smooth ride. One of the most recent options Roadsmith has to offer are the 'Comfort Controls'. Now that's one option I definitely wanted and they really do make a difference in the foot/leg position for a more 'natural' and comfortable sitting position.
Oh,,, have I mentioned? I love my Roadsmith, lol.