The Boruits make decent hosts if you don’t mind the custom-shaped driver. I did an MCU swap on mine and left the original driver board. I think I must have passed it along to someone else, I don’t have it anymore.
If $20 doesn’t break the bank, the Convoy H1 makes a nice host. Standard 20mm (?) driver board, e-switch with indictor on a separate board, LED on a replaceable 16mm MCPCB, no charging circuit to mess with, and the usual nice Convoy quality. I just sold mine to a buddy so I’m ordering a new one today. My first one just had an MCU swap. The driver is a decent 3 amp linear driver, but I might take this opportunity to do a whole new driver, we’ll see how well this new prototype works out.