Can anyone advise on best cam to use in Ultimo 4K?

Was using mgcamd in BH 3.0.3 with Duo2 fine, but this new box doesn't work with that.

Read a lot of stuff, suggesting mgcamd 1.35a worked, but doesn't for me. Tried to get Oscam working, followed all the online help, but don't really understand how that works, and no success.

Any help would be appreciated, thanks.