[Q] any regrets? topic

Greetings All,

I'm on a Note 3 right now, and Monday or Tuesday it's time for my upgrade. I'm torn between a Note 4 and the Nexus 6. The last 3 devices I owned were Note 3, Galaxy S4, and Galaxy S2. I'm really looking to switch it up here, and step back from Samsung for a little while. The Nexus 6 is my first choice right now, seeing as the Note 3 has me pretty spoiled with the large screen and the s-pen. I guess my question would be, since I've been seeing mixed reviews for Nexus 6 around the web, does anyone here have any regrets buying this device so far? And if so, are any regrets stone cold deal breakers, or just minor issues? I'm really looking at giving "vanilla" android (if that's even such thing on xda) a run, and I've heard that the Nexus devices have had the most and best development as far as that goes. So I guess I'm asking if there's any major problems with the Nexus 6 that is not being mentioned in a standard review, before I go scoop one up in the next day or two. Many thanks in advance...