AA GSR Complete or AA Entry w/ Shilen upgrade?

[Klem]

...Also, I'm attracted to flutes which the GSR has but Entry even with Shilen doesn't. Wondering as well how much weight the fluting drops.

Thoughts?

Lilja advertises the following weights for their fluted and non-fluted 17" M4 barrel'
Non fluted; 2.18lbs
Fluted 2lbs.

Not a lot of overall weight reduction (8%) but it depends how much meat comes off and how much you are willing to pay for about 10%.