The only bad thing I've ever heard is that some folks don't like the plastic magazines. I prefer metal myself but I haven't had any trouble at all with the plastic mag.
The trigger on my Tikka is even better than my older Remington 700s; very smooth and light.
Tikkas, especially .223 Rem, are more difficult to single-load from the breech than some internal magazine rifles like Remingtons, but I just load from the magazine.