I almost chose a .338-06 for my anniversary gift from my wife. The choice was a Mark V Ultralightweight .338-06 or Mark V lightweight sporter in .30-06. I chose the .30-06 mainly because I already had a .35 Whelen.
My anti looney thinking is get the 338-06, sell the Whelen and skip the 30-06.
My guess is they have both served you very well!