I've owned two, a regular P227 and the P227 Equinox. The pistol is my least favourite when compared to my other sig pistols; P229, P320, P226 X5 allround, P220 match elite, P226 LDC and 1911 Max Michel Edition. I really disliked the slop in the trigger. Even after installing a 220 SRT, I wasn't complete happy with the trigger or accuracy. I know that most of my other pistols are not in the same class but it wasn't until I took my slide from my P220 match which is a 5" match barrel and put it on the P227 frame that's when I really started to notice it's potential. Conversely the accuracy went down on my P220 when mated with the P227 upper. BTW the slides are completely interchangeable on the 227 and 220.
Anyway, most of this is subjective but I hope it helps you in your considerations.