I stay away from barrels with aluminum tenons..seen them mushroomed from the repeated slamming of the steel bolt as the rifle is used, then you have a big problem when/if you want to remove the barrel from the receiver
the KIDD Ultra Lightweight is the way to go for a light barrel
my lightweight rifles (built decades ago) use Volquartsen THM carbon fiber wrapped barrels, but if I were building them today, I'd use the KIDD barrel and save myself some $$$...the KIDD barrels may not look as good as the carbon fiber or anodized barrels, but a lot more bang for the buck