[Q] Difference between 16 and 32 gb

Hi there!

Just got myself a "LG G3 Gold 16gb" in mint condition. It´s just been rooted by me and I´m about to install TWRP and after that a Custom ROM.

My question is simple... LGE LG D855... the international one, are the 16 gb and 32 gb versions the same regarding custom ROM´s? I just want to be sure, so that I don´t mess anything up.

Difference in Droid Maxx's

Would someone help me distinguish between the different Droid Maxx's?
I have a Motorola Droid Maxx, XT1080, Kitkat 4.4.4, Build SU6-7.2. I see when using my phone it referee to itself sometimes as "Ultra." Then there is the Moto Maxx, RAZR Maxx. What are the differences, if any, and which forum should I post in? I have more questions about root access, Lollipop, Marshmallow, and custom ROMs.
I have been dying to unleash my phone but I want to do my research and have all my ducks in a row.
Thanks in advance!
SM:D

[Q] What's the difference between the XT1575 and XT1572 regarding system image?

I live in Germany and will soon receive my style, maybe tomorrow. My question:

There are several issues, that points to different system images of the XT1572 and XT1575. I assumed, that for example the lte channels (= modem) are the only difference, but there are some others, too. In an other thread, an user described a problem with using WiFi correctly, after flashing the system image of the XT1575 on a XT1572.

This would result in different roms, if development will start soon. Is this correct? Does anybody know, what's the real difference of the two devices regarding software/hardware? Are there different WiFi modules? Can you please support me?

I'll wait with rooting my device until I'll get some clearance about this (and maybe until M via OTA arrives).

Difference between Mi4 and Mi4c?

So what is the difference?

I think I'll buy myself one. Just have to decide which one.

I've noticed that Mi4c gets better result on Antutu. Is that because of software?