When you go to the forums you can just look for your name at the top of the page and click it to go to your profile and find your recent posts.

You can mix digital and analog servos with no problem. Also, I think its generally best to stick to name brand servos, Futaba, hitec, JR with the recomended torque for the plane. Other than that there is a lot of flexibilty with servos. For some aplications you could go with standard analog servos that go for $15 or digital coreless that go for $75. It just depends on the style flying. For warbirds high end servos arent really necessary as long as they meet torque requirements for the plane.