G62 with EI power to weight isnt much worse than any of the gas engines. Loosing that spring starter makes a big difference in weight. On a round cowl they are hard to beat. Rear carb is a pain... 3w great quality, da best warranty, zenoah best longevity, DLE cheapest..I would look real hard at the zdz 90 if i was buying new, da85 if buying used, and 3w if you can fin a NIB older one as they are insanely expensive new.

I have 2 zdz80's. They are smoother than any big single i have ever ran,the 90 is supposed to be the same, a da 85- smooth after the updates, but down 500 rpm , A 3w 85cs.. Monster power, heavier than DA by a ~pound but $$ new, and a couple of zenoah's, always start, run well and the EI one is superb!,... My china engine sucked a bearing after one season and is in the to be repaired someday pile.. Cheap is cheap...