II'll start by saying I still really like the Droid Maxx.
t's hard to say without seeing or handling the phones, but if I had to guess right now:
1 (Tie): Galaxy S6 (no interest in the Edge)
1 (Tie): whatever the iPhone 6 size model will be this fall, presumably the 6s
3: Whatever the Moto X will be this fall, particularly if the battery is larger. Qi charging would be a plus, too
4 (Tie): Whatever the Droid will be this fall
4 (Tie): The HTC M9
From what I have seen with the Turbo, I've been a little disappointed. It has had some weird issues that took too long to fix - some people had missed phone calls; delayed VoLTE implementation (which I don't care for, as my house has no LTE coverage, so the Maxx is by far the better phone for me right now, but the fact that it shipped without VoLTE just as the Maxx and Ultra was getting it is head-scratching to me); I've seen reports of the phone spontaneously rebooting when connected to Apple Airport routers, and those are what I use. Lollipop is now approaching 5 months without an update for the Turbo, and I always thought that was going to be a Motorola strength: faster updates. From what I have seen, the camera remains disappointing, particularly for shots of things in motion. (Mediocre cameras are also downgrading the Moto X and HTC One for me.) The battery, of course, is great, and both Moto phones get ranked up for Moto Display and Moto Voice (though Moto Voice is becoming less of an advantage with Android's built in support for similar features), and the Droids I like for Qi charging. (However, I have both Qi and Powermat chargers here, so that's a slightly bigger plus for the S6.)
For whatever reason, I just don't want anything by LG. Also, the Nexus 6 is way too big for me - in fact, the Droid Maxx is really about as large as I'd like to see a phone get - so that rules out the iPhone 6+ (or the S version this fall), Note 4 or, presumably, a Note 5 this fall.
Right now I am leaning toward staying Android, so that's probably the Galaxy. I do worry a bit about the smaller batteries in the S6, the Moto X (especially the Moto X), but the truth is that I can probably figure out a way to get my phone topped up during the day almost every day. And the glass back of the S6 - I'm a little worried about that being too fragile. We'll have to see what sort of cases there are when it comes out. But, FWIW, when it comes to accessories, no Android phones beat Samsung, usually.
The iPhone is tempting to me. Apple really makes great hardware, supports it better than anybody else (there is an Apple Store 25 minutes from my house; I have no idea where a Samsung, Motorola, LG, or HTC store is), there is far more accessory and third party hardware support for iOS than Android (I can plug in an iPhone to either of my car stereos and have it play easily, attach to BT right away as part of the cabled connection for phone calls), and, of course, the cameras are great. Also, the rest of the family are all iPhone (and that's literally - my wife and kids, my siblings, my wife's siblings except one and a sister-in-law who have an Android phone, their kids, even my Mom - that's 23 iPhones and 3 Android phones), so staying connected with them will be easier. Still, there are things about Android I prefer to iOS, particularly iOS's poorer support of Google services, so I think I'm still leaning strongly toward Android.