lol, no harm was meant, but....
Both whels are COMPLETELY different, not just the omission of the paddels.. the M wheel is thick, really thick, perfect really, but no paddels.. the M-tech wheel (pretty sure thats what you meant
is skinny and yes it has paddels (as its for the auto version of the z4) ..
If you can do without the paddels, or maybe you can mod/add them, i would suggest that you try and find a M wheel. you can thank me later... lol jokes, but seriously, youll be glad you did..
good luck with your hunt.