For the prices of both guns I would buy the Dboys SCAR, in all the test that I have done and from information from other sources the Dboys SCAR is a better performer than most of the other SCARS on the market, to include those from VFC. With the money saved you could purchase a better inner barrel and Hop-Up buckling and be on a good starting competition level with most of the other known brands without any major internal changes.
Having a `` Higher End ยดยด gun does not mean it is going to be more reliable or less likely to have problems, reliability is all based on the internals, quality of parts and the correct construction.
All makers of AS guns have their lemons.