RE: hyper 8 or 7?
I bought a Hyper 7 6 months before the H8 was launched. I was pretty pissed at the time, but its been a great buggy. If I was buying now i'd get the Hyper 8.5, but to be honest the are all pretty much bullet proof.
The hyper range to me offers the best value for money and durability out there. Spares are also plentiful and cheap.
TBH you can't go wrong.
I would always get the pro version though if you can stretch to it.