The good thing is there are numerous options to fit your budget/skill level/desire to try something new.

I went with the servo option because;

a) I had some spare Spektrum servos from when I purchased my Tx. Some tanks need SMALL servos. I did have to purchase the Camera Controller and Y cable.
b) Some of the turrets are very tight, and installing micro switches would be a challenge.
The Panzer IV is very tight, while the Tiger I is a piece of cake with it's removable turret lid.

If you have a programable radio, that makes it an even easier decision as you can program servo throw to fine tune the Min/Max elevation.