glock, you have to decide whay your shooting application will be before you decide what configuration to acquire.
Do you plan to shoot this rifle at 2-500 yards? Competition? Or would you be more likely so shoot in the 25-200 yard distances? Answer these questions and you will then have an answer to your thread.
I started with the "full size" (20" HBAR). It was like lugging around a Howitzer. Since those early days for me I have 4 AR15's, 3 in 16" and one custom Kreiger in 18.5". Since I shoot at the 25-200 yard distances these lengths are perfect. I still get good velocity and accuracy (the 2 are very different) and I now have a rifle in an acceptable weight and length.
Good luck choosing.
CMOS
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NRA? Good. Now join the GOA!
The NRA is our shield, the GOA will be our sword.