The 4.5 is also not worth getting. The 9L is much too small for an E-Revo. The 9xl on the other hand would do great in one. Maybe take a look at a used Hacker motor, or Mega motor...?

I just did some research on the 6.5 about 45 mph with 14 cells. And it's great. Watched vids, and talked to a person. What's soo bad about it?

Like I said, it costs more money than the 8XL + MMM. On 14 cells (16.8v) the 8XL will turn 34k rpm, which is good for 42-47 mph depending on the gearing. Just because the Feigao XL motors only cost $80 that doesn't mean they won't perform as well or better than the HV 6.5 or 4.5. They are at least as good quality, and the performance of these are very well documented here on RC-Monster. I personally am going for 9XL on 4s lipo (27k motor rpm). If you must have a higher quality motor, the MMM with motor combo is probably coming out in a few months for around the price of the Novak HV.