The PC7 is not a bad case for $99.
I haven't read anywhere that the thickness of the aluminum differs from the PC6x series
review at pcpowerzone.co.uk
I have a PC65 (just like PC60, but with side plexiglass window)
DIFFERENCES
no fan speed adjustment (I haven't had to use mine)
no slideout motherboard tray (useful only if you swap motherboards ALOT)
no slideout powersupply (useful if you swap powersupplies ALOT)
PC7 has 9 thumbscrews, PC60 has 24 thumbscrews (just move your thumbscrews to where you use them most)
lower air intake grill appears different (I prefer the PC7 front to the PC60)
But actually, IMHO, I would just get a PC65 from
PC65 @ mpcparts.com $140.
Another option, if you already have a PC7 or PC65.. or if you are short on cash this month, get the PC7 from outpost for $99..
..but later get the replacement side-window at mpcparts $30.