If looks are that important, just pick a case that looks good to you and mod it to your liking.
When I was shopping for a new case, I read a ton of reviews - concluding that there is no 'perfect' case. The mods needed for enhanced silencing and cooling are relatively simple internal mods which do not affect the looks of the case.
I did that - bought an I-Star Nitro AX, with full intent to mod it for both efficent cooling and quiet operation. I love it - now - but the case internals are considerably different than as-shipped.
Spend some time at silentpcreview for excellent articles, ideas and methods for silencing and apply them to your chosen case.
Hope this helps!