I have had custom bats made from Newbery, Warsop, Screaming Cat, Fusion and BAS.
MY best bats were Screaming Cat, Newbery, BAS and Warsop. Fusion are no way near to any of these companies as they make only one shape.
From the price point of view I would rate the companies as follows - WARSOP, Newbery and SC (as you pay a hell lot on postage and customs)
From Craftsmanship point - SC and NB are top of the table followed by Warsop
By my experience from price to quality/performance, I would rate as follows - BAS, SC & NB and Warsop.
Yes, BAS is not a custom bat maker but I have access to them and get some very good bats made from the top quality willow.
Newbery and Warsop have an edge over SC and BAS as they are based in the UK and get access to the best willow / personally select the willow. However, the willow on my SC and BAS was in no way inferior to those on the Warsop and NB.
I would put (in fact have put) my money on NB, (BAS) SC and Warsop.