The fork issue Mirra Co had has been remedied. S&M once had problems with dropouts only tack-welded on, but I don't see any one dissing S&M. Of course many kids weren't born when that happened either...

As far as a complete freestyle bike the main thing you want to look for is a full-chromoly frame & fork. That's why the DK 6-pack is well-thought of. It gives you that & fair parts for a good price. A LOT of other bikes at the same price-point have similar parts spec, but a lesser frame.

So do some reasearch on the Mirra CO & Redlines in your price range & see what the frame is made of. Don't think that "Chromoly Top Tube" or "All chromoly Main frame" is the same as "Full Chromoly" or "100% Chromoly". If it doesn't say ALL 4130 chromoly, it isn't.
-Bill