VZW 6.5 vs. MightyROM 1.20.10

[kidwolf908]

***I know I could have searched and read through 10,000 pages of results, but I only have a few questions***

So, I'm coming from the stock Verizon 6.1 ROM and it has been great to me! However, I do wish to have the features that Sense 2.1 and WM 6.5 bring with them, so I am interested in flashing. I am torn between Mighty and the stock update though.

I want the same speed and reliability that my stock 6.1 ROM provided, so I am leaning toward the VZW release considering the problems that MightyROM still has, but I have a few questions:

Does the VZW 6.5 ROM require the MMS fix that custom roms do?

Do custom roms have this "battery drain" issue that people are seeing with the VZW 6.5 update?

What kind of bloatware is loaded into the VZW 6.5 release?

How much ROM/RAM do you have available upon first boot with both VZW 6.5 and MR 1.20.10?

Thanks in advance!