A good reg is going to last you 25-30 years with proper service. My US Divers/Aqualung 1st stage is 45 years old and still serving on my pony. The rest of my regs are Oceanic but you want a reg that can be serviced locally.
If you look for ScubaLab on ScubaDiving.com you can see the regs rated for performance by price but again it needs to be serviced by someone you trust.
Being a photographer I like my side exhaust Oceanic Omega because it keeps the bubbles out of my face but wreck divers don’t because they breath wet when looking left.