IMO, there's one way to do this - Have your dealer give you a real demo and then you will know whether upgrading your table will make a difference to what you hear. You will or you won't. You are approaching this as if something is wrong because you think your digital sounds better than vinyl, which is an incorrect premise, IMO. There may well be something wrong with your turntable that is causing a sonic issue, but if not, a VPI, decently set up should be sounding very, very good at minimum. I used to have a Music Hall MMF5 turntable that cost me about $700 that sounded very good even compared to my 10k digital player. So set up a demo and let your dealer show you why you should or shouldn't upgrade your turntable.