Genesis also owns the 'Hardest to get parts for at the LHS' segment. I go into my LHS asking about Genesis parts, it gets so quiet, you can hear crickets chirping.
You may be surprised at how that changes soon. Horizon Hobby has picked up Cen Racing. So soon parts availability will be as easy as Losi. Even if the LHS doesn't have it in stock, a quick order will get it. I think this will greatly affect this Cen "downside".
As far as body designs go, the MGT flag body is nice, but it's never been one of my favorites. Not enough colors IMO. I prefer the Revo and T-Maxx 2.5 bodies more myself. The flag theme has been done so over-the-top by some airbrushers out there, that the MGT version seems too tame to me. Of course body looks is more of a subjective opinion though.