Hi. The Soundcloud links aren’t working for me at the moment but I thought I would chime in.
I don’t know your familiarity with guitar amp plug-ins, nor the recording / mixing / mastering process. I may say some things you already know but it’s not meant to be condescending.
CABS MAKE A DIFFERENCE
Inside the plug-ins themselves, the cab modeling makes the biggest difference in sound. Even with all of the EQ controls on the amps and the EQ sections in the plug-ins, moving different microphones around in the cab model section will make a massive impact on the overall tone. Usually there’s a default combination of a 57 with a 421 mic. Get in there and start moving them around, then try other mics. (I tend to keep the 57 for brightness, and play around with other mics to dial in some warmth.)
If you already have external impulse responses you prefer, you can load them into the NDSP plug-in and use them rather than the proprietary cab.
Don’t forget, you can mix and match plug-ins inside of a DAW environment. For example, you can run the amp model only from Soldano SLO-100 and run it into the cab model only of Plini, etc., using multiple instances of plug-ins on the same track. You might find something cool if you’re adventurous and patient enough, but I cannot guarantee any kind of results.
LISTENING ENVIRONMENT MATTERS
Are you listening back with headphones or a studio monitor setup? Your perception of the guitar tone may change drastically just from switching from headphones to monitors and vice versa. Try listening to both, loudly. If you can get a good tone through both, you’re probably in a good spot to use for recording.
IT’S ALL ABOUT THE MIX
“Albumworthy”, or more often the term “mix ready”, may be a bit of a misnomer. It implies that no other processing needs to be done on the guitar track, which is almost certainly untrue. As @keith said, there are EQ and compression decisions to be made which move away from “does my guitar sound good” and toward “how well does this sit in the mix”.
Stereo double-tracking is a common method to make your guitars sound full in the mix. If you’re playing power chords for some main rhythm parts, then try recording multiples of the same part and panning them 100% left and right. You may find that it takes surprisingly little tone shaping in the amp plug-ins (left side / right side) to get an awesome sound. [Don’t bother with the Doubler in the NDSP plug-ins; you will want to fully record each left / right track for the best stereo results.]
If you’re sending your tracks to a mix engineer, chances are they may already have some of the Neural DSP plug-ins in their DAW. In that case it’s important to send them the raw, unprocessed D.I. guitar tracks (in addition to “your” amp-modeled tracks) so they can load them into any plug-in.