AlKim: BitFenix makes pretty good entry-level cases. The Merc is the cheapest BitFenix case (37€) my local PC shop has in stock, and I'd say you'll be getting quite a lot for your money. It's quite narrow (190mm), but since I have no idea how big your heatsink is I can't say if this will be a problem. The Shinobi is wider (205mm) but also costs more (54€ in the same store). My Cooler Master HAF 912 Plus is 230mm wide for comparison.
Can't tell whether you'll have problems with vibration since it depends on a million things. For instance, my case hasn't got vibration problems as far as I can tell, but fitting a side fan will make the panel rattle. The rattle can be fixed by lowering fan RPM or fitting a silicone frame between the fan and the case. Also, the same case began making an irregular, low-pitched sound at one point, and it turned out that the main fan was damaged, causing the RPM to wander around creatively. Maybe it's just a failing fan making the noise, not your case?
Thanks for your advice. I ende up buing that Merc case. I looks good and is not bad but I ma not thrilled by ilts layout with PSU, graphic card, HDDs located in lower part of case. It is overcrowded with cables and stuff and it prevents good airflow, while the upper part is almost empty (except my big heatsink).
