I just got my new Trailside 2 weeks ago. It's the 4.5in. Target model. I gave 425.00 in Des Moines for it. I also have a Ruger slabside target model(KMK-678GC - about 325.00), with a Volquartson trigger group.
The Trailside has had some problems, which I'm hoping will go away as it breaks in some more. So far I've shot about a 700 rounds through it. It has trouble on the last round, sometimes jamming as it loads it and other times it ejects it with the previous spent round. It sounded like a magazine problem, so I called SIG but they said to send it in(with me paying the shipping), so I'm gonna keep trying to shoot it for a while. The problem has gone from happening every magazine to every fifth or sixth. I asked my dealer about some spare magazines, but he said he has had 12 on order for several months now.
I've tried as many different kinds of ammo that I could find. As for accuracy, it seems to like the more expensive ammo the best(it jams on all of the ammo about the same). The trigger, the sights, and overall feel is great. It's really easy to take down and clean. It just plain feels like a quality piece.
I find myself shooting the Ruger a bit more. It's reliable as a rock and if I feed it Federal Target Gold($2.25 - 50), I can shoot it about as accurately.
In the final analysis, I'd have to say it's about a toss-up between the 2. If I had it to do over again, I think I would have saved up another $200.00 and bought another Kimber.