MSI MAG FORGE 100R ARGB MID TOWER or
MSI MAG Forge M100R ARGB
Either of these would suit me, the have good fans and aRGB which is controllable which suits me, the fact that they are quiet and also have PWM is a deal sealer, especially as fans are 500+ a piece for something decent. Both these are around 4k or less, one other case which seems slighlty better, but at around 4.4k is Galax revolution 01 (Rev-01) as it has a hinged door. As I'm trying (and have to) maintain a tight budget for this build, the MSI MAG FORGE 100R at under 3.8k seems best.
However I will look into any suggestions. I'm not building a gaming rig, rather a work rig, so the bling doesn't matter, just not fugly!