Agree with what Brew_boy is saying here, join as an A Mech. Work on Challenger 2, Warrior, AS90, Trojan and Titan when they replace AVLB and AVRE and you will benefit from the same quals but also you will recieve a wider scope for postings with Inf Bn's and Armd Regts.
The only downside i would honestly say is that as an A Mech your legs hurt more when you visit the gents as you stand up to pish.
I am very surprised it took as many as 3 replies for the "Squat to piss" statement to come out. Im an "A" Mech to, so i do agree with this statment. I think its all a bit blured now, as Im an "A" Mech with Cheiftain and Warrior experiance serving in a light role Inf Bn (Wolf's and Daf's). But its all good fun!!!!
I started out life an an A mech but soon saw the light. I probably had one too many cases of GUE knee. Sorry!!!
It depends on whether you want to be green or not, 3 Commando Bde and 16 Air Assualt Brigade don't do A vehicles, apart from the BARRV at Chivenor. Unless of course you classify CVRT's as an A vehicle. Apologies to HCR.
My advice would be to go with either choice, nothing is ever set in concrete.You could always change your mind.
If you like VMing and solving problems, B mech's the way ahead, if you like taking big lumps out of oily hulls and replacing them with a slightly cleaner big lump (not very technical) then A mech's for you.
[/b] Im off back to a tank unit from a light role inf unit, quite looking forward to gettin back to Armour, but it isnt half easy at a "b" veh unit. Hardest thing is keeping up with the bloody MEI's and 6msi's!