M50 head refresh - what brand valve seals to use?

[Jon K]

Autohaus offers ElringKlinger set for up to 8/92 (non vanos) in 7mm for $11 ea (2 per car) or ElringKlinger/Victor Reinz in singles and not as a "kit" (the pic looks like its lacking something?) for $0.50 ea in 7mm... so, do I get the ElringKlinger set for $22 or the single pieces from Elring/Victor Reinz?


Also - for the crankshaft oil seal (rear) do I use the original with tension spring or updated version without? One is like $6 the other is $20 (without is more expensive)