RE: YS 110 practice plane
I've got an Excelleron with a YS .91FZ in it. Plenty of power on 20/20 for Intermediate at 1400asl at reasonable temps. Very hot days, 30 percent nitro helps. With the 110 you are good to go with 20/20 at all temps. I'm running an APC 15X8 right now.
Mine came in right at 8 lbs with standard gear and a Nicad pack, with Radio South hinges instead of the factory metal ones. Thats pretty good.
Mine was about an 8 out of 10 for quality and straightness. Needed some slight rework for the stab mounting holes- some sanding and a 1/16" shim and it was good. Wing fit was dead on and very straight. I went with the factory hardward except I substituted Dubro 2mm links - I like the pin retainers on them rather than the heat shrink on the factory links. Makes adjustments easier.
I'm pretty impressed with the factory softmount considering its cost. Works reasonably well.
I've added more down and right thrust to the factory settings and moved CG back a fair amount as well which helped inverted and rolling manuveurs.
I suggest running LOTS of expo - the control surfaces are very powerful. I can easily do a knife edge loop with only a little pucker on the bottom.
With the one piece wing, its a pretty quick field setup, minimal fuss. Great practice or competition machine in Sportsman and Intermediate!
I'd look into the Showtime as well - looks pretty comparable to the Excelleron.