I have the z-force. This isn't something I would make an official recommendation on, because it's mostly subjective, and comes down to what you prioritize. For me battery life is the most important thing, and I've been using the battery Mod with this phone. It's absolutely ridiculous! I go 2 full days of serious use. I usually go to sleep with the battery Mod about kicked and then wake up with 80% left on the phone battery. The 80% easily lasts me the next day, and to this point I haven't had to charge again until bedtime on the 2nd day. So it's a for real 48 hour phone with the battery Mod, not just a phone with the capability of getting 48 hours under very particular use. For me that's a game changer. The battery Mod makes it a little heavy and adds thickness, but in my opinion not too thick or heavy given what it does. I personally don't mind the weight, but when you hold a much lighter phone, it's definitely gonna standout.
And...
Camera is excellent. Definitely better than my wife's 6s and up there with the S7 from comparisons I've done in person. I didn't really test low light in those tests but I don't look to take a lot of low light photos, so not a big deal for me. Overall I've gotten excellent photos, and the flash works perfectly well in dark settings. In marginal light conditions, it's been more than adequate. The T1 camera really wasn't very good as a reference point for my opinion. The T2 had a solid camera, but you needed a really steady hand. I think it's similar on the z-force in terms of what you need to do to optimize your photos. You probably need a steadier hand than you will with the S7 or Iphone. So it might not be quite as easy to point and shoot and get an incredible shot, but the capabilities are right up there with anything on the market.
And the operation is the smoothest of any android phone I've used. I've had the last 3 Motorola flagships, and I thought all of them were buttery smooth, but this phone is on another level. It doesn't lag in the slightest and the screen transition and sensitivity is easily the best on any android phone I've tested. It's right up there with an iPhone in my opinion in this regard.