I have 3 different rifles built on the Manners T-2A (6x47 Lapua, 7 Dakota
, 338LM Ackley Imp.). I love the stock, and will use it again on other builds. I also like the T6, and would use that one with no problem.
I'm not a big fan of the hook found currently on the T4 and T5. I prefer to slide my rear bag forward and backward to make elevation adjustments (which I can do on the T2-A), and that is not really possible with the hook. The T4 is a virtual clone to the MCmillan A4
, which I owned and used for a long time. I liked it, but prefer the sloped rear end found on the McMillan HTG (owned one of these for years also), A2, A3, and Manners T2 and T6.
I've not used one of the Manners bedding blocks / chassis, so I cannot offer an opinion on that aspect of their stocks.