Bill,
I'm in the same boat as you. I am leaning toward the 460 although still thinking about the 514. I have an appointment with Eric @ Competition this week to finalize the engine deal. I have decided on a custom built motor in lieu of the crate motor though. From what I have researched and been told, the components used in the custom builds are much better than used in the crate. Eric is also providing a warranty with his motor which is a big peace of mind for me since I'm not a "motor-head". Reliability and driveability is my #1 concern and Eric knows that. Although the HP bragging rights is also a fun issue!! Reality is that I will probably never use that kind of HP in the type of driving I plan on. It just kind of neat to know its there!!!