mk3 xr3i and s1 brakes are the same mk4 xr3i and s2 brakes are NOT the same, the s2 uses the brakes off a xr4i or xr4x4 iirc

out of all your choices above id wouldnt bother with any of them and instead
would use

cossie 2wd 4 pot calipers
4x4 discs
2wd pads

you will need to modify the calipers very slightly but it will give u good brakes for little cash, also refurbish whatever calipers you buy with new seals

i have s2 brakes on my s1 and as the s1 has no abs they work well