Let me ask you: What do YOU think of the sound? Lend me your ears (
). Am I just being too hard on myself?
The sound I am hearing is a very clear one - The Instruments and The Voice. Very pristine with an edge of precision, in relation to the sound quality/recording.
Asking people here to 'lend their ears' and restrict their natural urge to review the structure must be 'killing them' - some have broken that barrier already. I'm sure many here are just itching to 'point the way' - but your restriction stands.
As to you 'being too hard on yourself', I would say so - Yes. My perception is that you are meticulous in what you are doing and what you want to achieve, and are determined to do it come hell or high water. Now the crux of the matter is that you have an ideal in mind that you want to hear. Your reality (and lets face it, recordings are a huge smack in the face with reality) is not matching that ideal - no matter how much you change, adjust, purchase, modify, realign, and so on, and on, and on.
As usual here in the forum, others have provided many excellent suggestions for where to go next with gear. My suggestion would be to take a step back, mentally. Mentally rest and relax into the creative process rather than spending your time striving to acquire it, or insisting on how it should be. The (mental) act of trying to force a result is separating you from making your own clear judgement of your work.
Clearly you enjoy creating music and the recording/mixing process. Don't let 'perfection seeking' eat away at what you love doing and get so much pleasure and contentment from.
Pete