I have multiple Tikkas, and I love them -- lightweight, super-accurate, and smooth. I don't like the supplied rings and the dovetail idea. From experience, I can tell you that it doesn't take much of a bump to dislodge the rings from the dovetail, and at that point the ring is usually bent. Can be fixed in the field, but accuracy is then off.
The pic rail on a Tikka is rock solid, and facilitates larger-diameter scopes more easily. It also gives you more options other than a 0-MOA mount, for those who like to shoot long range. More durable, less susceptible to movement. Hope this helps!