I had this plane combo 'till this spring but here's what my experiences were.

I first used a cleveland cyclonic (mezjlik knock off) 16x8 prop. It flew ok, but needed more vertical, so I made a call to desert aircraft and they suggested an 18x6 mezjlik. I thought that it would be too much, but ordered it anyway. HUGE difference. Didn't lose any apparent top speed, but vertical was much better and the engine liked the prop better. I only lost about 400 rpm with this prop over the 16x8 as well.

Unfortunately I lost this plane on the first flight this year. Radio issues. I'm in the process of ordering another one with an FPE 2.4.

-Aaron