[tturedraider]

Pretty much every single thing you just asked for is subjective, so if you only want unbiased, “factual” comparisons you are pretty much out of luck.

The E60 is a great car. If I were buying one I would definitely get an N52. Even though the E60 is larger than the F30 it would, most likely, handle better than the F30. Personally, even though I like the E60 a lot, because of my size preference, I would probably be more inclined to get an F30 if I was choosing between the two, but there could be an E60 that might win me over. So, objectively, either the F30 335i or 340i is more powerful than an N52 E60. If I was getting an F30 I would get a 340i with the B58 rather than a 335i with the N55. In my mostly subjective opinion the B58 is a better motor. Objectively, the N55 is probably a little bit less reliable than the B58 has been, but I still don’t have a list of facts to post to back up that claim.