Differences between Bravo & Echo, weight considerations, and other options. However I really like Tikkas & the KRG stocks...
I have had my heavy .308 T3 Tac in a Gen 1 Bravo running AICS magazines for years.
Building another 6.5CM T3x CTR in a Gen 2 Bravo with the CTR magazine option.
Finally putting a .243 T3x Superlite in the Echo using the Tikka magazines, more of a sportier build.
This way every time I shoot it will be the same fit and feel, muscle memory. There is also an upgrade path into KRG's higher end chassis if and/or when I want.