I don't think I am good enough to know if the 605's have a centering problem (I would probably just think it was my flying). I didn't think digitals would actually make that much difference. But difference in strength (holding power) and speed of movement is markedly better on the 5925's I have. If I ever do the 80"er I will probably try to afford digitals all around. My CG's are still on or slightly back from the factory recommendation only because I haven't taken the trouble to move them. But now that I am starting to try 3D stuff I feel they need to be back some. How much, who knows.

Visioneer - I think you are right on with those props. I am still on the end of my first gallon of gas and flying a 17x8 and 18x6 prop. Darn thing never runs out of gas! I actually like the 17x8 a little better. I have an 18x8 Menz coming that I think is going to be just the ticket. 20x6 Hmmmm.