Alignment tomorrow - Z4M vs M3 CSL?

[Newbers]

My Coupe will be in tomorrow for RTAB's (if in fact it needs them), rear ARB drop links, adjustable camber arms and finally alignment.
Front strut pins are already out.
I anticipate that I need to establish a good benchmark for the alignment and that I may have to have another go at in the future but for now I'm debating whether to go for Z4M vs M3 CSL? I'm thinking probably the former.
Car is a daily driver and spends most of it's life on the M25 so I can't have anymore difficult to live with. It gets driven hard but never on ta track. That said I will not tolerate understeer.
Car is low (not dickhead low as someone said....) The garage it's going to will do anything I ask but I will have to be explicit rather than leaving them to advise.
Any suggestions?

 

[Ed Doe]

Meh csl geo isn't really that aggressive, I'd bung that on personally as a start. I ran csl geo (or as close as permissible with stock si geo) for years dailying my old si coupe - it was perfectly mannered when pottering....!

 

[Newbers]

It wasn't a pain in the on the motorway when you just want to get home with the minimum stress and effort without constantly correcting the steering?

 

[Ed Doe]

It wasn't a pain in the on the motorway when you just want to get home with the minimum stress and effort without constantly correcting the steering?

Not that I recall? I did 50k in mine in under 5 years, most of it on the csl geo with bilstein b12s and powerflex bushes - it seemed fine to me?