I just picked up a 5" yesterday. I stripped it and did some minor clean up on the trigger track and bow. I took it out and ran 200 rounds through it with no problems (135gr SNS - 3.8gr W231 - 1.12"). The fixed sights were on at 15 yards. It's probably too early to tell, but it looks like Springfield may have addressed some of the issues with the 5" version.
It defiantly needs some tuning. The trigger is 4.5 lbs and is creepy. The grip has some really sharp edges around the mainspring housing. It's also a little over sprung and I can feel the slide hanging on the disco. One nice thing I noticed is they ditched the 220 grip safety and went with the standard.
Overall, a pretty good value for $1250 (firstline price). I'd say it's fit and finish is almost on par with their TRP line (not quite as good, but close).