A write-up on my Anex and Vessel bit holder handles and bits...
The Vessel dedicated screwdrivers are +1x75 and +2x150. I wouldn't do without either one of these. My +3x150 in the second pic doesn't see much use. The bit holder handles from left to right are the Anex 3780, ratcheting Anex 306, Vessel 270W, and Anex 3775, and underneath is the ratcheting Anex 397 with a Wiha Centrofix bit holder.
The friction fit of Anex and Vessel bits in the Anex handles is in my opinion superior. The (ball?) detent mechanisms do not lock the bits in place, but the ~40mm insertion depths of the close-fitting hex receivers on the Anex 3780, 3775, and 397 are very confidence-inducing. The bits feel a tad looser in the Vessel 270 but it's still very useful for a small stubby. I'm super-pleased with the Centrofix in the Anex 397. It will
securely lock in Japanese 13mm anvil bits, western 9mm anvil bits, and C6 style bits. The irony, of course, is that the Centrofix itself is only held via Anex's friction fit mechanism. But I have a 4mm diameter spacer under the Centrofix shank to allow it to bottom out when the ball detent engages the 9mm anvil groove. Works well.
The mix of Anex and Vessel bits are mostly +3, +2, and +1 left to right. Top row is mostly 110mm, with two 135mm and one 100mm. Middle row are 65mm with +0 and +00 on the extreme right. Bottom row are 50mm Vessel bits (including a few reduced-shanks) bought specifically for the Anex 306 handle (second pic, second from right, but they can also fit in the Vessel 270). The Vessel bits bottom out exactly when the 306's ball detent engages the groove in the 9mm anvils. I love how the 306 set-up is working out.
ADD: In the Altoids tin are some hex bits and the +2x-6 insert bit that came with the 270.
Looks like I've got all lengths covered!
BTW, toes included for dramatic effect.