Drew,
If you want to go all out and build a functional desk that will serve you for many years, go with a roll-top.
I built this a few years ago and am happy I did.
Keeps the kids and pets out. No clearing a place on a table, no set-up time, just sit down and start tying. Fast clean-up, just close the door.
I find that I enjoy the time at the desk more and get more done. I can even walk away from a half-tied fly if I must.
I found the free plans here:
http://www.plansnow.com
Have fun building!
TwoWeight