I've built and sold several Howas over the past 10yrs, and have never had a problem with any of them. I keep one of my lathes set up to cut metric threads because of the Howa action. There are a few more choices in aftermarket support than there were when I started doing barrel & action work - most notably, PTG's Stealth DBM (although it requires some machine work at the rear of the action's mag well to fit), and B&C's #2093 stock. While the HACT 2-stage trigger is much better than the older style OEM trigger it replaced, I still prefer a Timney set at a little under 2lbs. I've taken several of the Howas in 6.5 CM, pulled the OEM 24" hvy bbl, dialed it in & threaded 5/8-24, machined the mag well for the DBM, added either a EGW or Warne 20 MOA sloped scope rail, then bedded the bbl'd action into the #2093 stock, and sold them to guys needing a basic rifle to get started. Can't do it for less than $1200 without giving my labor away, which doesn't compete price-wise with the RPR. But I'd prefer the resulting Howa to a stock RPR myself.
I've never so much as held a Tikka - would like to work with one, get it up & running in B&C's new #1046 stock, then see how it compares to the Howa. Both the Howa & Tikka have a well-deserved reputation for very decent accuracy with their OEM bbls, but like I said, I don't have any experience with the Tikka.