OP, I would choose this case for a workstation build.
http://www.overclockers.co.uk/showproduct.php?prodid=ca-167-sv
these coolers are quite, and there reliable with these co fans.
http://www.arctic.ac/eu_en/freezer-i30co.html
Again for workstation you need very reliable SSD/HDD. I would be looking at Samsung 850 Pro SSD's that can sustain a large amount of writes. HDD's you need Weston Digital Black, or Weston Digital RE if your running raid. I would also look at Raid recovery on the boot drive, you can use a HDD to Raid recover an SSD.
I would also consider if you need a 6 or 8 core i7. The 6 core i7 is a huge saving over 8 core.
Any workstation build is balancing these things.
1) Noise as someone has to sit 3 foot away for maybe 40 hours a week.
2) The computer is performing a high value task, so you need to minimize downtime. So you choose high quality components, think also if a application drive fails. Whats the downtime cost of re-installing software compared to buying extra RAID disks.
thanks for th?e suggestions. have not noticed that case before! will take a look at it