If you want an engine that you barely have to think about that just works and delivers power smoothly go efi.
If you want to modify your engine in any way and don't want to spend an absolute fortune, go carb.
I personally would prefer if i could use efi, but i want to do stuff to my engine, so the stock efi would let that down.
Unless you really can't do much on a car, swapping an entire engine and loom from a 280zx wouldn't be too hard,
there are a couple of other things you might like to farm out like fuel lines, pump etc. but overall a pretty simple swap.
One of the other negatives of stock efi is that you just simply don't get that amazing sound you'd get with carbs/ ITB's.
Overall, if all those neg's don't bother you, I'd go with efi, if they do, just get your carbies tuned (and if you don't
already have one, switch to a L28 while you're at it).