Sounds like youve got the idea

Before we get into a big flame war with people telling their stories and opinions...
Fixed heads are obviously more reliable. They have no moving parts and are usually pretty hard to tear up. Many people have horror stories about mechanicals, and failure etc, but i believe the better/higher end mechanicals are superrior to the older ones and have a lower failure rate.

Fixed blades are usually smaller in diameter which equals a smaller wound channel. Sometimes having a monstrous blade tho, isnt a great thing. It can cause poor penetration, which is no good[:'(].

Fixed blades are definately less idiot proof as far as tuning goes. They require either site adjustment, or some tuning to get them hitting where your fp's are usually. SInce you do say you are new, im sure tuning isnt going to be easy either(no offense).

I used the rage 3 blades last year and had great luck with them. 3for3! They fly like field tips just as everyone says. There is always that feeling of doubt tho,... that what if type of thing. Oh well... until they fail, im gonna use both!
Good luck either way and welcome to the most addicting hobby/lifestyle ever!
derek