First, I would like to say thank you for the awesome tutorial. I followed this tutorial to get my SGH-T989D running ICS 4.0.3 rooted and had no difficulty at all (just followed everything to the letter and read through everything 3 times before I even began... yeah, I'm paranoid, but phones are not cheap).
I have a question about the custom kernel/roms you suggested: With BeastMod you say to use Mr. X's synergy Kernel, but with Mr. X's ROM you say to use stock with CIQ removed. Is there anything wrong with using Mr. X's ROM with Mr. X's Synergy kernel or is this pair not a safe bet?
IF the kernels are compatible with each other, I am thinking of trying to dual boot the phone to handle both Mr. X's ROM and BeastMod... just so I can evaluate both of them and swap ROMs any time I need to reboot (this allows me to do a better evaluation of the ROM as I am mostly concerned with stability and compatibility with my current applications/games and currently I am needing to reboot roughly once every 2 or 3 days to keep the phone happy).
I am wondering about compatibility because when trying to install a custom kernel on my SGH-T959D, I picked an incompatible kernel (Synergy... read good reviews and decided to try it not realizing it wasn't compatible with my phone) and got stuck in a boot-loop... it was a brick. Couldn't get into download, couldn't get into recovery, it showed the splash screen and if I was QUICK, I could get ADB to get into the logs where it was having an issue with the hardware abstraction layer drivers which forced it to reboot. Brought it back to telus and tried telling them that it was a bad update via Kies, but they didn't buy it and I had to get a new phone... so I went with the SGH-T989D (at the suggestion of the gal working at the telus store).
I am just being cautious because I don't want to end up with the same brick I did with the SGH-T959D, but I am finding the stock kernel/rom is eating up more battery than I like and at times, things are not as responsive as I would like... I am also having issues with MTP, but both Telus and Samsung are telling me to wipe it to fix the issue and I'm thinking that if I am wiping anyways, why not pop a custom kernel and ROM on as well.
One last question: are the recommended kernel/roms ICS or GGB?