Mic for recording sound demos ?


Looking to get a mic that does a decent job capturing my stereo system in my room. Looking at mic advice under $500. I am looking to record the audio via my PC using audacity. Right now I have a blue yeti mic but it didn't sound very good. I do have 2 shure dynamic mics (SM58 and PG48) sitting around here.
I was thinking a stereo mic, connected to a focusrite 2i2 then to my pc would be the best option? But open to other thoughts on how to capture this. That guy sound sommellier does an amazing job with his recordings but he doesn't mention what he is using.
smodtactical
I have a Zoom H6, really a bad a bit of kit and way more portable than the PC thing....

have fun
Ya I looked hard at zoom h6, h8 and sound devices mixpre 3 II.
As for stereo mics I considered rode NT4 and for separates Rode M5.
I have an MXL V67Q stereo mike, which I use to record myself on piano, fiddle and guitar. I connect the mike to my Zoom H4 portable recorder. Not that the Zoom’s attached mikes are rotten or anything, but the MXL actually gives me bona-fide tone and imaging. By the same token, though, it still ain’t quite out-and-out pro quality.
A while back I did some research on some lower cost microphones that had really good sound and response.  I ended up getting a matched pair of Rhode M5 mics, which worked really well.  They are well regarded by musicians for general recording.  By coincidence, I also used Focusrite 2i2 for mic interface, since these mics require phantom power.

If you want to step up, the Rhode NT5 are excellent and also include a really nice case.  They are over twice as expensive (but still under your $500 limit).