The CZ 550 uses the classic Mauser 98 action. Proven. Strong. Reliable. Not as refined as a Model 70 or a 700. Likely not as smooth in operation, either. But if you love the classic 98 (and I do) then you will appreciate this rifle.
The CZs are not as "pretty" as other commercial models from Winchester and Remington. Again, it comes down to favoring the classic 98 system over frills. I have a 550 and several other CZ/BRNO rifles and I love them all.
The 30-'06 caliber is certainly the top choice for a general purpose rifle.