Camshafts

[Interceptor'85]

Heya,
My cars an EF II GLi 4.0 auto, w/ pacemaker h4480 extractors, hi flow cat and 2.5" straight thru exhaust.
Who's delt with what Cam or knows some info they can share about the following?
What prices am I looking at?
And looking at 'Neb's Guide' it seems a Vernier Gear may be needed for some cams? At what stage is that necessary?
Same with upgrading valve springs, at what stage is it necessary?

Crow Cams
2222519 Mild Performance Cam EF/EL
2222543 needs computer recalibration
2222546 Race Cam need new computer

ALTED Cams
Stage 1 ?
Stage 2 ?
Stage 3 ?

Wade Cams
Wade 1636 - mild street setup
Wade 1004 @ 112 lumpy idle again still suitable for a mild street setup
Wade 1521a large cam recommended run a computer heavy duty valve springs

Jim Mock Motorsport Cams
DEV3HL - good idle and good midrange power for the street, requires heavy duty valve springs due to the high lift
DEV5 - good idle, makes most power high in rev rangeneeds heavy duty valve springs

Cheers