If you ever find hard disk noise to be an issue, the suspension material used by the Solo just isn't very good. I would never trust it.
If you want to use hard drive suspension I would try Stretch Magic:
viewtopic.php?t=11674
There is also a German vendor, I can't think of their name at the moment, that makes a real nice suspension system that you can place within a hard drive slot.... much much nicer than the goofy elastic bands on the Solo... in my opinion. (I think I got mine at FrozenCPU or PerformancePCs)
I have a solo (actually it is my son's)... I just didn't like the look of its suspension option and have never used it myself.
EDIT: Just for clarification, this is an irrefutably true statement:
quest_for_silence wrote:With reference to hard disk noise, the most notable source usually in a very quiet computer, yes, the Solo is really better.
That being said, only the most extreme silencers care about HD vibration. Generally if I get things so quiet that HD vibration is a problem, I am a happy camper. I can think of only one instance where that wasn't true for me.
The Solo controls HD vibration by suspending the drives using elastic that sort of looks like something made out of the elastic used in under pants... only higher quality. The other alternatives above can be used to suspend hard drives much more securely than does the Solo. The solo has a slight bit of sound deadening as on the side panel as well... but nothing like the Fractal.
And by the way my personal recommendation in your case isn't the Fractal (mostly over with weight issue and some complaints about build quality) I will stick by my recommendation of the Lan Gear... but I don't think you are making a mistake if you get any one of those three cases. They are all good cases. Pick the one you like.