Planning to get an E90. Can't make up my mind about which one to get. There is almost a 6K difference between the two. Are (40HP, Xenon Adaptive headlights, Logic 7 surround, driver memory) worth the additional 6K? In terms of HP, the E90 325i is comparable to the E46 330i. Should I get the E90 325i and add some non-performance options? Your thoughts?