I’m a long time lurker who has gained an enormous amount of valuable info from this great forum, so couldn’t resist giving you my Rega RP10 experience.
I started off with RP10, Apheta 2, Aria and kept the outer plinth and cover on, all sitting on a thick marble bench.
After a couple of weeks I took the outer/cover off and preferred both the sound difference and minimal aesthetics.
As I got more serious and moved from 272/250DR to Melco N1ZS20 > NDX2 > 552 > 300DR on Fraim, I decided that a wall bracket was also necessary for the RP10 as I have old wooden floors, and notwithstanding the thick marble bench, I could still hear heavy foot fall (and I have teenagers who like to dance to vinyl also!)
When I ordered the Rega wall mount and cups for my RP10, they accidentally sent my dealer rigid feet instead of the cups. As they’d sent them already, I decided to give them a go before returning them.
In short, on the wall mount, I found the rigid feet to be materially better than the standard feet (which you may be missing?) for transparency, bass control and clarity of vocals - basically across the whole sonic spectrum.
It may well be a sonic taste thing, but if you value transparency above all else, and getting the closest you possibly can to what’s in the vinyl grooves, then for me the rigid feet on wall mount got me quite a lot closer.
I have since then upgraded to Aphelion and Aura, and it has taken what I thought was a brilliant match (Apheta 2 and Aria) to a completely different level of detail and sophistication. Interestingly, I had the Apheta 2 running with the Aura for two weeks or so while I was waiting for the Aphelion, and while there was a definite upscale in space and air throughout the soundstage, the Aphelion + Aura is a 1+1=3.5 upgrade.
I suspect that you don’t get the full value from either without matching them.
A further cheap, easy and frankly extraordinary upgrade came with putting Les Davis constrained layer pads underneath everything.
They are one of those products where you just shake your head and ask how on earth they work to produce such an extraordinary sonic upgrade, but IMO they are a ‘no brainer’.
They are hundreds of dollars to do an entire system, but are the equivalent of box, cable, and shelf upgrades costing many thousands and even tens of thousands of dollars.
I thought I had room acoustic problems, but putting these underneath everything tightened and controlled all levels of bass to a degree that just makes me smile constantly, and has me interested in some electronic music for the first time (try Kruder and Dorfmeister - The K&D sessions on vinyl).
They showed that I don’t have room acoustic problems, and have elevated transparency, clarity and air in the soundstage to degree that I don’t hear in perfect dealer listening rooms.
For what it’s worth, I have also replaced the supplied excellent quality RCA>RCA interconnects that come with the Aura, with SL RCA>DIN but only 10 days ago, and so it’s too early to make a judgement on the difference.