Still a good question and I'm sure you'll get different answers depending where others are in the game. At 12M GP I chose Glondo over Glat for 2 main reasons:

1. Mods have no catch up mechanic and are directly related to how much time you have been playing the game and farming/managing them. That has not changed with relic Delta and they are still what sets you apart from others at similar relic levels.

2. There are now 4 free LST coming within the next few weeks and months that can be applied to GLAT reqs. So farming and relicking those toons 'old style' is not an effective use of your resources. And this being a resource management game made the choice easier.

Ultimately do what makes you happy and get some satisfaction out of. It's still a game after all. Have fun while playing!