Personally, I wouldn't go with a 5400RPM drive. I have a Seagaste "Green" drive that spins at 6900RPM and I can tell the difference. But if you are using a WD Red NAS drive as secondary backup it may not matter since you are using an SSD for the OS and programs.
http://www.tweaktown.com/reviews/4647/corsair_carbide_series_300r_mid_tower_case_review/index.html
The Corsair 300R is a fine case. But like all cases you should read all the reviews to see if it fits your needs. Cases are the first thing everyone sees and as such may reflect your taste(s). As it pertains to the 300R there is room for improvement, as there is in all cases; specifically that it may have been better if the front fan were blowing across the HD bays and if it had about another 1/2" (12mm) to 1" (245mm) more room at the top to facilitate a thicker water cooling radiator or to make it easier to add or remove the top exhaust fans. Some cases give one very little room to work with.
The 5.25" bays may be one too many but installing a BD/DVD/CD burner is a snap. The wire harness routing holes are nice and big, making it easier to install SATA cables which are typically connected from the side. The top wire mesh could be a little more porous and if a bottom case filter is used it could be a little bit easier to remove to clean (along with perhaps adding longer feet to minimize dust pick up.)
Another good case would be the Thermaltake Core X31
http://www.tweaktown.com/reviews/7735/thermaltake-core-x31-mid-tower-chassis-review/index7.html
I would love to take a saw to it and cut off a few inches from the front, as seen on page 7 where the DVD drive has been removed and the SSDs lay flat over the PSU area. Then if a BD/DVD/CD burner is necessary one connects a slim burner to a USB port. The "problem" with that case is the hole size on the top exhaust area, IMO. It looks restrictive.
http://www.tweaktown.com/cat/cases_cooling_and_power_supplies/mid-tower-cases/index.html
The NZXT S340 is 200x445x432, which is smaller than the Corsair 300R. It's cooling can be augmented by installing Noctua front fans. I would install five Noctua fans (2x front, back and top and the obligatory CPU fan).
So the mobo would need six fan headers.
http://www.tweaktown.com/reviews/6814/nzxt-source-s340-mid-tower-chassis-review/index.html
Me, I hate front doors since they restrict air flow and typically fail (break) later on. It's definitely not a case to have when you have children in the house. IMO; ymmv.
A case that appeals to me is the Fractal Design Midi R2. But it is 230 x 460 x 515mm.
One of the few cases to get 100% from Tweaktown was the NZXT H440
http://www.tweaktown.com/reviews/60...iew-first-case-to-score-top-marks/index7.html
Is there a store near you that you can see and feel different PC cases? At my local Fry Electronics store I must have spent a total of 8 hours looking at each and every case they had.
