Quote Originally Posted by Nighteg View Post
These days all the LTB rewards are identical, so unless you're planning to get the next LTB to 9 or 10, do your other upgrades. It won't change a thing.
personally i'd say get all or at least most LTB's to level 5/6 and then start up systematically start going back over them getting them higher as the upgrade cost starts to rise quite quickly beyond the midpoint.