Need help choosing...

Ok, I have 3 out of 4 character slots used. I have a W/Mo20, somewhat obviously. My 1 brother made a R/E, which I intend to help him lvl up to lvl 20, and change to R/Mo. My other brother just recently made a Mo/R...weird combo, but once it hits lvl 20, Ill change it to Mo/W to farm stuff :P. I have ONE slot left. Any ideas what I should make? Should I go with Me/N for a degen mesmer? Me/W for an illusionary weaponrist? N/Me for a SS farmer? or N/Mo for a MM? There are other choices, such as a nuker or ice spiker, not sure what to put as secondary for either of em. nuker I was thinking E/Me for a bit of degen within the aoe stuff. Spiker I was ALSO thinking Me for the same reason. Anyway, please help me!

I tried the W/Mo, N/Mo, and Mo/R. Then i tried the E/Mo, it was way far the fastest i ever leved up throught groups. It was also the easiest to play. imo
I later changed to Ranger secondary once i got Factions cuz i love that white Tiger.

a few suggestions:
get a diff account than your bro
dont level him up, thats spoiling the game for him
and with the new template thing it doesnt really matter what you choose

well, 2 get a different account then my brother, that would be...another 60$ for prophecies, THEN I go buy factions. SO, that means I'd be spending 120-180$ for Prophecies, Factions, then maybe nightfall. That will take me...6-9 months to save up for. I dont think so. And my question was, what should my PRIMARY profession be? And, I would like only one build, because I hate having to get 15k to buy 1 set of droks armor for one build + runes, then another 15k for another armor set + runes for 2 different builds on the same character. Its a waste of time IMO.