The plasma rifle isn't crappy.
It's one of the better weapons to dual weild with. Dual plasma rifles will take down a VIP's overshields in a heartbeat. I've used that "noob" combo countless times on Sownbound VIP.
Ever tried the SMG, plasma rifle combo? It is the best dual-wield combo in the game (aside from the SMG + plasma pistol...but that's just noob).
the smgs in halo 3 (the beta at least) are better than halo2s (in my opinion) they shoot faster and when ur unloading with 2 of them, they make this awesome aound affect kinda like the ghost when its about to explode :shock: its pretty sweet