At the risk of being Tarred and Feathered, I offer the following "random thoughts".
There is nothing wrong with a full sized 30/06 Garand.
I do love a Tanker sized Garand. [I do not have a MiniG sized Garand, but I do know I would love it as well].
I have a lot of experience shooting full sized 30/06, and 308 Garands and 30/06 and 308 Tankers.
I have had problems, and so do not shoot factory commercial hunting ammo in any 30/06 Garand. I have not tried any of the adjustable gas plugs.
I have not had any problems shooting factory commercial hunting ammo in any 308 Garand.
For that reason I would prefer a 308 Garand IF I was going to install a new barrel.
IF a person was to buy a 30/06 Garand, I would just recommend to them to buy a BUNCH of 30/06 ammo, suitable for a Garand.
And a Gross or two of enbloc clips as well.
For Hunting ammo, just load 150 to 180gr bullets to Match ammo Garand 30/06 specs for your rifle, and all is good.
I have found NO difference in reliability, between a 30/06 or a 308 Garand, as long as proper ammo is used.