I am wondering if there are any benefits to increasing either the intergalactic research network techology or the graviton technology higher then 1. It seems that once you have these two you gain the full benefit of them immediately...is there an advantage to having one or the other at two or three.

This also applies to energy technology once it hits 12...as the benefit of having it at 12 is obvious since it allows you to research and develop other things...but is there anys reason why I'd want to go for 13 or 14 and so on

Thanks!!!

The point or the IRN is to increase it past Level 1, since it links your Research Labs. 1 Level allows another to be linked; so Level 1 there is only one, Level 2 there are two, etc.

Graviton Tech is useless after Level 1 and Energy Tech is useless after Level 12.

Eric made a nice list of how useful techs are here: viewtopic.php?f=2&t=3206&p=32255#p32198

One thing I'd add is that graviton 2 might be useful, since there is talk in the forums that a new ship might need graviton 2. Normally there'd be no reason to worry about it until the ship actually is made available, but given that grav tech is generally made with at-risk satellites, it might be worth getting it to 2 when you have lvl 1 achieved.