ORIGINAL: Flypaper 2
Dug out some old literature from when I sold a few of them. The 35 was 2.5 HP and the 42 was 3 HP weight 3.8 LBS. Best all around prop for 35 is 18-8. 42 is 18-10. Highest compression 35 I still have was from the late 70s. Like a good wine, they just get better with age.

They may be heavy and under powered but they just keep going, like the Eveready rabbit.
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The vast majority of models do not need the likes of a DA or a 3W inside of the cowl. Most are well served by plebian utility engines.
I'm on an SPE kick at the moment myself. I love the light weight and low price of the Brillelli and BCMAE engines.
Ed Cregger