shantaKlauss - I looked into the RC-690 and it doesn't seem like my type of case..I don't really like the look of it.
The NZXT looks tempting. Here's a list of the cases I'm currently looking at:
Lian Li PC-65B
Thermaltake Armor Series VA8000BWS
Cooler Master Stacker 830/COSMOS 1000
The Lian Li Mid Tower case just recently caught my eye. I'm not sure it'd fit a 750W power supply and two 4870s though... The full towers are over my set price but if its worth it I may end up with one.
Word of advice. Depending on your budget, go for a full-tower. It also depends on which graphics card you will use but most of the newer generation have gotten longer and now there's all these fancy coolers on them now.
I don't know how many drives you will have but it's always better to have spare room than trying to rearrange hardware and try to make room.
If budget is an issue, then yeah, your options become more restricted and you're probably looking at mid-tower cases.
I bought an Antec Solo and although it's a great case, I didn't give myself much room for such developments of video card sizes. I don't know why they have to make them so huge as you think technology advancing would result in a smaller frame. Go figure.
Anyway, I suggest a full-tower if you're a gamer. I know the choices aren't as good and the prices get higher but you might be thanking yourself in the long run.
Canuc1 - I decided to go full tower. Not just because I game but because of the extra room. My current PC I have moved/adjusted (except to be cleaned) in 4 years. I don't travel with my pc or move it anywhere. The prices aren't too much more. It's around $50 but if I shop around hopefully I can find cheaper prices. Yet the question still remains...which one?
The NZXT Tempest is technically a full tower as it is as large as one. Out of all the cases listed, the Tempest is the best especially for that price, even though I like the CM 690 better for pure ascetics.
After a lot more looking and keeping budget in mind the NZXT Tempest seems like it's the one I'm going with at the moment. It's currently $99.99 with a $30 mail-in rebate. It's larger than the Antec 900 and has a water cooling option.
If you guys know of any relatively cheap full towers then that'd be great.