Local dealer has two non-current GT's. One is a 2015 and the other is a 2016. Identically equipped except that the '16 has ABS Pro, '15 standard ABS. 2015 can be had for about $2k less than the 2016. Did the gear box smooth out, or other niggles get resolved, between these two model years? Is ABS pro any better? I have always believed, where BMW is concerned, that you should always buy the most current model. Don't know if I'm getting $2k in improvement in this case. Opionions please.