Here's a pic of my spinner. As you can see, or not, it looks fine with a 33mm spinner. I don't think it looked bad with the 28mm spinner and I wouldn't even hesitate to use a 34-35mm spinner if that's what I had on hand. I'll also include the link to the prop/spinner I'm using. The yoke is for blades with an 8mm shoulder but I have also used blades with a 6mm shoulder by adding a couple washers.
It's not quite a warmliner but it climbs, at least, as fast as a hi-start and I'm afraid to do loops at full throttle. With the 11X6 props that I keep breaking it will hang on the prop until the torque and wind overcomes the control surfaces but even with the 10X6 it will accelerate indefinitely in a vertical climb.