I think you may like a Polo if you were thinking of a Colonel. The Polo handle feels like a large Colonel to me. The knot on the 8 is comparable to a Duke 3 with a little more loft and the 10 feels like a Chubby 2 again with a touch more loft. I have a hard time picking favorites but my most reached are Grosvenor, Polo 8, 58, Tulip 3 or 4, and the Chubby 3 although the knot is much bigger than I need on the Chubby. I'll try to get a picture if it could help you decide.
I managed to get a Tulip 1 and it's pretty good. I think I'd probably like a T3 two-band even better. Simpson, if you're listening, stop! PLUG YOUR EARS. DON'T DO IT, thanks!
X2L Colonel is my favorite handle of any brush I've used, with a Semogue SOC a close second. My Simpsons M6 is pretty nice. For me, the Tulip 3 is just okay, and the Chubby 2 works fine but feels too big. The X2L feels like perfection, but I prefer a smaller knot with more backbone.