Dedicated Vinyl system next upgrade?

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)

@oregon some good advice. I’ll likely keep what I’ve got for now and wait until I need to replace my cartridge before doing anything crazy. Thanks for the idea and thought everyone. This forum is great!!!

Hello, all this talk about a new tonearm is very interesting.  I have a different suggestion.  I owned a VPI classic turntable for years.  One day the unipivot pushed me TOO far.  After futzing with the turntable for years I put it up for sale.  Three is one really good thing about a VPI, it's retail value.  Instead I purchased a Pro-Ject RPM 10 Carbon Turntable.  It's filled with a metal/resin particulate and sits on its own isolation table that is filled the same.  I was SHOCKED at the difference of isolation.  This metal/resin particulate allows vibration to drain out.  I can blast my record now with pure clean sound.
O.K.  here comes the recommendation....
An isolation table for your fine turntable to sit on.  At that point you will be amazed at how much better your system sounds.

@drewmb1 thats a good suggestion. I currently have a makeshift or rather homemade isolation table. It’s a combination of butcher block sandwiched with foam and some other stuff. Do you think the “proper” $500-$1000 iso tables are going to do a much better job? I don’t know because I’ve never tried, but I think what I have put together is pretty good. Could probably be better. Maybe that’s the disease talking tho! Ha!

Holly law a diminishing returns is right.

Paul you have an outstanding base to start with & moving up the later is going to cost you large, so you’ve hit the nail on the head there. Compound that with the audio disease, meaning what ever you do will eventually lead down the road of discontentment.

Best path IMHO from both a sonic and economic prospective would be to up grade the caps in your Rogue with either Mondorf’s Supreme Silver/Oil or V-caps (do your research), along with some new high quality tubes, . https://www.vhaudio.com/21capacitorshootout.pdf

Another possibly is a Vishay volume control. But that’s getting expensive

The other suggestion would be to purchase only high quality recordings.

As for cartridges .... now you’re racking up the bills. There’s a host of used MM that might tickle your fancy, but as for their condition it’s a bit of a shot in the dark. You already have a far better than average cartridge in the Hana SL, so your next move might be a Soundsmith Aida, or Voice, but now you’re doubling and tripling the price of your Hana. Is it worth it ????? Now we’re back to the law a diminishing returns.

Then of course there’s the listening room. If I may suggest, address that if you haven’t already.