RE: what servos are you guys using?
I have to agree with Ed that for general "Sport" flying, there is really no need for the expense of the digitals, even flying a vintage pattern bird. A normal Futaba/JR/HiTec ball bearing servo will do a great job for a long time at less than $30 apiece.
For "Competition", meaning you actually are going to fly in competition, your plane deserves only the best, and that would be digitals on all flight surfaces. The key to linkages is that you should set your servos to use all the available "steps" 1024-2048 using your servo arm length and control horn length to where on "High" rates, you use 100% of your stick movement to get the desired manover result. Linkages have to be absolutely slop free and the money spent on the "high priced" hardware is worth every cent. It makes no sense (cents) to spent $50 on a servo and have a steel pin/plastic point of movement. That type is wearing out from the moment you start flying. For competition flying, you really do need the best equipment you can buy, because everyone else is going to.
Deadstik