Bra - No. I think they look uglier than stone chips. I'd rather (and have) repainted my noses on several occasions
Radar/laser detector - Still love the V1. The arrows are great
Laser jammer - Lidatek. I have Lidetak in two cars and they work great, never gotten a laser ticket. If I can figure out where to get power I'll have one in my E90 330xi as well and later the E92 M3. If anybody can help, see this thread
http://www.e90post.com/forums/showthread.php?t=50527