I'm assuming you're referring to the 2017 F Sport. If so, the 335i M Sport will definitely put a bigger smile on your face. I have both a 08 335i and 08 IS-F. Both are awesome machines. 335i with the twin turbo v6 and IS-F 5.0 v8. Only complaint with any BMW as you may know is maintenance and repairs, but if your under warranty you don't have too much to worry about. Anyways, the 335i M Sport is well balanced, solid suspension, and delivers great power with their twin scroll single turbo v6.
'@eyzz21 excellent advice, really appreciate your insight on this! Also, you're very lucky to be able to finance both cars for yourself! I bet a lot of people in the forum are reading your post with green eyes haha! That said, could be a good idea to look at extended warranties for cars whith history of high maintenance like the BMs!