Poseidon Jetsreams: my original reg choice from the early 90's. Still work great and very easy to self service. Have a backmount doubles set, a single tank set, and for a couple stage bottles. I really like the compact 1st stage, how the 2nd stage stowes easily on a stage bottle neck, and having a different 2nd stage helps prevent confusing gas source when doing reg switches.
Poseidon Cyklons: simple, practically bullet proof. Use on stage and/or buddy bottles
HOG D1 & D3: Very economical option for good regs, and for my situation with multiple family
Members who dive and loaners for friends. I also like their position to support self service and no hassle parts availability. I have several dedicated sets for backmount, sidemount, and single-tank.
Dive Rite XT: these are my latest favorite. Very well made, and similar engineering to what I am used to. very high quility. I like the serviceable HP seat, and reversible 2nd stages. I have several buddies who dive these as well, so expanding my pool to learn about gear that gets used a lot around me.
I like to be able to service, maintain and trouble-shoot any regs that I have. So for me that is a pre-req. I really hope to stick with just these three brands now to simplify tools and spares I needs to keep up with.
I have an old Poseidon Cyklon with a 109 safe second that may become my go to reg if it shakes down well this spring.
Bob