Well, not a lot to add once the masters have spoken. Let's not forget another master that appears on the board-- Eric Wolff. For inspiration (or humbling if I get feeling cocky) I like to browse his project picture history (drool bib recommended)
http://public.fotki.com/YoEric/With our Jet, we started between centers (spur and live) because it came with those. As Spinningray recommends, a dead center or a dead cup center in the head stock is safer than a spur drive. Since there are no blades on the drive, if/when you catch the chisel the dead center will simply spin in the wood--minimal danger.
As the Jet and other lower cost lathes are exactly that--lower cost lathes (great for lots of stuff but with some compromises), you should check the 'match' of the center of the drive vs. the center of the tailstock. Put the drive center in the headstock and the live center in the tailstock and bring the centers together to see if the points match. Our tailstock has a bit of translation and rotation when fit in the ways of the bed and seems better alligned when locked against one of the ways vs. the other.
I'm now mostly making (well, mostly thinking about making) tops from plywood glue-ups with a PVC insert where the tip installs. The PVC is tapped and a peice of all-thread rod is installed and secured with a washer and nut on the inside of the blank (the layers are pre-hollowed with a hole saw before glueing). The threaded rod is then screwed into a hub that screws onto the headstock instead of the face plate. Note that this assembly has a lot of 'joints' each of which can introduce some 'off-centerness' leading to poor balance.