Are there any good non D class amps that can push my twin RE SE 12s

You have some other problem if your FM reception is affecting by your amps....

You have some other problem if your FM reception is affecting by your amps....

like what?

I thought it was pretty common for class d amps to deminish fm reception

Actually, I haven't noticed an issue with FM reception in my install, and if it was there, I'd definitely notice.

Now, the noise floor sucks for single-sideband and AM reception when the Tantrums are on. Almost unusable from 20 meters (14MHz) up to 6 meters (50MHz). So there's definitely broadband noise there, it's just the noise-rejecting capabilities of FM keep most of it out of the receiver's front end.

Yep not a concern I personally would look for a D in particular for sub duty.

I have a D class amp now (PG RSd 1200.1) and there is a clear difference in FM reception quality when the amp is disconnected.

and to boot my HU doesn't have an FM mode selector to switch from stereo to mono which would help dramaticaly

anyways I have a bigger problem i need to solve

My amp (PG RSd 1200.1) isnt stable at 1 ohm so I'm running it at 4 ohms which only grants my subs (2 RE SE 12s) ~800 watts to share.

So I thought switching to a US Amps XT 1600.2 and run it at 4 ohms which would grant my subs ~1100 watts to share AND solve my D class FM reception ruiner problem.

Whutcha think?

If you have the coin, go for it.

I think you have more serious issues though if your amps are effecting your FM reception.

Fix your grounds

and to boot my HU doesn't have an FM mode selector to switch from stereo to mono which would help dramaticaly

Switching to mono would likely make things worse.

But as said before, it's the grounds...