Dedicated Vinyl system next upgrade?

Hah ! I love this forum. It took less than 48 hours for members to recommend thousands of dollars of upgrades, many of which would actually be side-grades, based on their personal tastes / preferences, not just answering your question. It's all good, but damn, it's a rabbit hole !

Paul, the Concept is a fine table. You will have to spend a lot more to get significantly better.

This is the best comment I've read, in my humble opinion.

You have a really nice system. I'd suggest small improvements like a good/better record cleaning system and then look at a better cartridge. These changes can potentially give you the biggest return on your investment.

Vinyl out sold CDs this year for the first time in history so the rabbit hole is growing ;~)

Just a quick observation regarding fuses if you go down that route.  You don't need to change 4. Only the main fuse to get the most benefit.  I've replaced several of my components with them and its a very nice cheap tweak.  

1. Speakers 
2. table
3. cartridge 

If I remember correctly (I’m too lazy to scroll to the top) I read the word “love” at least twice. You said, I love my system, I love the sound...something like that.  Very powerful words! Any old school audiophile will tell you that. We fell in love with our stereos and thrilled at the sound of music.  Then...we got bored*, or, had extra money and decided to change something. Years later and thousands of dollars later, we lost that loving feeling and chased the dragon.  You have a very good system. You love it. Continue to enjoy it as it is. IMHO, buy an IKEA shelf and hunt for records and enjoy the music. Do not start down the path of audionervosa.  *After years of working trauma (I’m a surgical RN) I come to realize that boredom can lead to some very bad decisions. 

I've just been trying out a relatively inexpensive upgrade to my vinyl set-up that has impressed me greatly. I suspect the biggest improvements are to be found with lower-end set-ups, but my experience, with a reasonably high-end vintage set-up, has been extremely positive.
It's an isolator of sorts, that fits between cartridge and headshell, made by the Funk Firm in the UK (formerly Pink Triangle), known as "Houdini".
It's resulted in a lot more depth, space and resolution to the music. What was a bit of a mellow-sounding cartridge seems to have more bite/attack and firmness in the bass, without any harshness.
The cost in the UK is £300, which many commentators on various forums have written off already, despite not trying it, purely on the basis that nothing this small and simple should cost this much money. The entire HiFi arena would be a very small place indeed if everyone believed this!
There are actual reviews starting to appear from sources with more knowledge and experience than I. Houdini will soon be available to the public (FYI: mine was supplied and fitted by Arthur Khoubessarian of the Funk Firm and I paid full price for it). I understand that they're offering a full money-back guarantee to buyers who try it and don't want to keep it.
j.

System:
PT Tarantella/Origin Live Silver/Ortofon Kontrapunkt B/Houdini
Audio Research SP9 mk3
Micromega Solo
Albarry M1008 Monoblocks
Pro-Ac EBT
(VdH/Kimber/Cardas cables, Woodblock/Red Rollers RF inhibitors)
(my primary turntable - PT Too (Anniversary Spec)/SME V/Koetsu Urushi currently out of action)