Paceacars..
Just be carefull what you read and what you are lead to believe by others. Lot's of folks are too cheap to by good equipment and if it goes bang a few times, they claim it to be as good as a better product.
Anyone who would tell you the B-26 even tuned by Mellick is the full equal of an R-9 is full of crap.And, you should be very leery of any other advice they would give..
Also, the German guns arpeciate in value. I don't see that happening to the Chinese guns at all.