so if i had to choose between rvz01/rvz02/ftz01 to fit a 1070 inside, which should i go for?
I think if I am not wrong the RVZ02 can fit a full sized graphics card at the expense of adding a 3.5inch HDD. If you have a smaller card, you can fit the HDD in the same compartment as the graphics card.
For FTZ01, you have a dedicated space for adding 1x 3.5inch HDD.
Also the CPU cooler clearance is higher for FTZ01 (85mm) vs RVZ02 (58mm)
So it really depends on what kind of components you want to add. for such mini itx HTPC cases, space is a premium, so you kinda need to do a little more homework on what what you want to add, and whether it can fit all into the chassis. You also need to consider potential thermal issues for such a small enclosure. Not that is terrible, but a little bit of planning goes a long way.
I was planning to build a HTPC with a GTX1070 card using the RVZ02. In the end I held my purchase until the gigabyte GTX 1070 mini ITX is released so that I can fit a 3.5inch HDD.
Now that I have seen FTZ01, I might consider it as my chassis of choice and go with a full sized GTX 1070 card. But I am in no hurry.
Hope that helps!