Did a little research. I don't see a better alternitave for power right now.
DLE-35 33oz $349
DLE-55 45.4oz $369
DA-50 47.04 oz $549
Evo 40cc 51.2 oz $499
Zenoah38 49.02oz $319
All these weights are plus muffler but only the DLEs have a muffler included in the price.
I just cant see hanging another 12oz or so to the nose to get better verticle. I have seen Goldbergs fly way over weight and way over power. They were fine for IMAC type flying but don't dare dead stick one or try to harrier it. Guess it depends on the type of flying you do.
David