I've owned both, and would pick the Tikka all day. The action is just so much smoother and the trigger is quite nice right out of the box. Yes, there aren't as many after-market options for the Tikka, but there are enough. In addition to a few really nice chassis systems available, you can always pick up the CDI bottom metal that will allow you to use AI magazines (5-round and 10-round) in the current stock - you will have to do some inletting to do this, but a good smith will be able to do it for you if you aren't the handy type. There used to be a really nice 2-stage trigger by CG-Jackson for the Tikka that's spendy ($325-ish), but I don't think it's being made anymore. In any case, the Tikka T3 is a pretty kick-ass rifle and the action is a fantastic base to build upon.