CrankBrothers' Pica+ offers hard-wearing Allen keys ranging from 2mm to 8mm, two Torx keys, a chaintool and handy clip-in 8mm and 10mm sockets.
The chaintool is okay, but needs a bigger tab for better purchase, and we’d like the sockets to snap firmly onto the 8mm Allen key rather than just sitting in place. Fitting them back into the tool body is a faff too.
Each tool bit is indexed, so they can be locked at 90 degrees or held flat, which is good when tackling lengthy stem bolts or similar. The indexing does mean that it’s not so easy to access the bits when wearing gloves though.