I have liked all the 5 Vegas I have had more the longer I have had them. Lately I still buy them when I can get a deal, but I mostly put them down and smoke only the ones i have had for months. No problems that way.
I figure, with the prices you can get them for, waiting a few months costs me nothing, and when they emerge they are like more pricey stuff. Not all cigars I have found age as well as others, but the 5 Vegas age very well, and improve a lot in a few months to a year at 65%.
Gurkhas, some I like and some I hate, and I have never had the Centurions, so can't be any help there.