I'm pretty much on the fence right now between iOS or Android, more specifically the iPhone 6 or the Moto X+1. I'm leaning more towards the iPhone though. I've used a Moto X for 4-5 months, but am currently on an iPhone 5C.
There are loads i love about the Moto X, I even made a video about it.
There were basically only 2 main trigger that made me decide to switch,
1. When i bought the Moto X, I had to get it imported into my country because it wasn't officially sold in my country, so the T-Mobile version that I ordered did not support LTE in my country. Recently 3G/HSPA+ has been extremely unstable for my carrier, dropping signal frequently (same for my Moto G as well). I tested the LTE signal on my Nexus 5, Lumia 625, HTC One M7, and iPhone 5, and they all worked great. (Not the Moto X's fault really but it was a trigger for me to want a change)
2. My Moto X suffered screen burn in (navigation buttons and status bar) after just 3 months+, and it's going to be a PITA to claim warranty since I don't live in the States. The main reason it got burn in was probably because I am a pretty active Ingress player, and that requires a lot of on time for the screen at full brightness, especially in bright day light. While minor and not really noticeable unless I am watching videos or rebooting the phone, it still annoyed me slightly.
So actually, I really like the Moto X. The switch to iPhone was purely coincidental, it might as well been other Android phones but there isn't any that interest me now. I just wanted a change, and was pretty interested in what iOS 8 will bring. And I actually am pretty content using my iPhone 5C now despite being dependant of a few google's services still. I'm leaning towards iOS 8 as it will bring features that I think will improve my workflow. While Moto X's customisation is great, using a pink iPhone 5C is pretty unique too. lol.
So now, I'm just waiting to see what I/O will bring, and then to see what Motorola can do with the X+1, which is pretty much the only Android device I am looking forward to.