I have Hagon Nitros on my 2007 Street Bob 1'' longer than standard, never really been that impressed with them,they are ok on my own but not that much better than stock,2 up they bottom out too easily but its a shit bike 2 up anyway,so I just put the single seat back on.
One of the Hagons recently pissed its oil so they will need to be rebuilt over the winter,or I might just put the originals back on for all the difference.
I put 3/4 inch spacers in the forks and put 15 wt oil in which improved the front end to a fair degree for very little cost,a Predator mount helped stiffen things up and combined with a chain conversion after the belt went tits up at only 24,000 miles makes for a fairly vibey ride, but its bearable.
Shock Factory shocks are fairly new on the scene but get a good reputation and are available in different lengths,Uk distributor is Marksmotorcycles in the vendors section
http://www.ukgser.com/forums/showthread.php/466733-Shock-Factory-Front-amp-Rear-Shock-Absorbers
Its never going to be a sports bike but that's not the point,I get a lot of fun out of trying to ride it quickly without really going that fast.