I recommend 5/8" thickness. Forget the extra $12.00/ sheet. Remember, pay now or later, an' find the 4' or better yet, 5' x 12' sheets, providin' ya can get 'em into yer basement! Much less mud an' sweat, after ya get done with the pain of restin' 'em on yer heads!!
Steel studs definately show a "mature" perspective, speakin' from a social stand point.
At any rate, the more screws/nails, the NOT-better...........
(IMHO) try to minimize excessive screw tendancies. Secure the perimeters, then a FEW centrally located points, then force yerself to jus' refrain, back off!
Unless yer a big fan of muddin' screw-pops.......
Take yer time, use lots of halogen lighting, an' a larger than 8" blade for the final finishin' of the joints......
