another data point:
i'm totally pro-lemfoerder, and buy it as my #1 choice where i'm not going performance aftermarket....but i decided to try out the TRW ZHP control arms. TRW is a good name and they make quality stuff, and these arms are no exception - the build quality, packaging, presentation, and on-vehicle performance is very good. plus - they somehow came in way cheaper than the lemfoerders.... i think i got them from FCP for $111/each.
food for thought.
peter
2004 330i ZHP
2005 330iT ZHP
2010 328iT M Sport