You'll need to decide between Tikka mag bottom metal or the MDT mag bottom metal. Two versions exist and as far an I know, they are not interchangeable.
I ended up going with the MDT mag version because that's what MHSS had in stock and I needed the Bravo ASAP for an upcoming match. I think I actually prefer the MDT mags to the factory but would go with either. The OEM mag bottom metal will save you from having to get new mags. But, I was able to sell my Tikka OEM mags fast and for a decent price.
Otherwise, I think you'll be very happy with the Bravo. I have them on my CF(Tikka) and RF(Vudoo) trainer. No complaints. I have yet to try any other chassis, besides the Tikka TacA1 chassis, because I'm very happy. Makes me wonder what I'm missing though.
Good luck with your search. Dealing directly with KRG has been excellent for me. As well as MHSS.