After market parking sensors

[Jonnymaz]

Just wondered whether anyone would care to give their opinion - are they to be avoided?

A couple of the CSLs I'm looking at buying don't have parking sensors fitted as original options, and I have kind of grown accustomed to electronic aids in keeping my paint nice!

My local indie has quoted over £1k to retro fit the official BMW unit, but an after market model would be £200-£300. Would anyone notice? Would this affect value? Personally I wouldn't have an issue provided it worked (after all you get small round sensors on the bumper either way), but I thought I should ask those with more experience before I potentially ruined a perfectly good CSL!

Also, if after market rear sensors are ok, would this apply to front ones, or should they definitely be avoided as it would be obvious that they are not OEM?

Any thoughts welcome.

Thanks