Go with the PC-7. The 6077 (which is the bigger sibling to the 3077 case I had -- and got rid of) series has several drawbacks. First is the use of 80mm fans, which have less airflow than 120mm fans and are more noisy. Second, the removable drive bay module is a pain-in-the-arse to work with and you have to remove it to access the fan filter. Third, it uses the clip-in motherboard standoffs, which caused me to turn the air blue with selected vocabulary. The 6077 is an old design which has been (thankfully) been replaced by better designs.
The PC-7 Plus II is a good case, but you also might want to look into the original PC-7 Plus. The Plus II replaced the optional blower fan (that exhausted air out the back) with a regular fan that blows air out the side of the case. The blower fan allows you to set it up next to a desk (or in a cabinet) without worrying about clearance on the side.
Coolerguys still has the original PC-7 Plus in Silver with the available option of a side window:
http://www.coolerguys.com/840556060833.html
(Although it does not come with a blower fan -- however, the back panel is drilled and prepped to install one).
You can also buy the blower fan seperately:
http://www.coolerguys.com/840556061199.html (The kit is for the V-series, but will also work in the PC-7 cases).
If the side exhaust doesn't bother you, then do get the Plus II version, as it will be easier to find.