Crystal Light: What GPU should I get?

Yeah, I mainly fly tubeliners and private jets, so I kinda need the glass cockpits to be up to snuff, unfortunately. I did do some flying in some of the steam gauge planes, but I've got the money set aside to give myself good visuals. The main thing that was making me wonder if I should risk the 5090 is that a) you can't get one and b) if you do, it might catch on fire.  And that was before c) they're shipping defective ones that are underperforming by as much as 10%.

I've resolved to just hang out for awhile and, hopefully, get one when they become more available and maybe the bugs have been worked out.