Hi, I am like Gareth (@Pink) above came from an e60 525d and BMW was better from driving point of view, seats had more support in them and much better heaters in them. I think Lexus is much comfier and quieter, I am much calmer driver in Lexus too so better for my license. My Lexus is more expensive to insure though.
CVT box, I guess it takes time to get used to, CVT is very smooth and I liked in BMW a kick in the back when you floor the accelerator!
Interior is better quality on my Lexus, cooling seat option is great, great Mark Levinson music as I hated the quality of the music in e60.
I preferred an e60 i-drive system to Lexus but I think by now I got used to it so no biggy.
I also like the rarity of the car on the road, it is too many BMW out there just now, plus Lexus is more relaible and I do not have on a back of mind mind that something will go wrong shortly - EGR, DPF etc.