I think it's down to knowing what you want really and not falling in to the ongoing chenge-in, change-out box swapping. I decided a few years ago to keep to what the space in my hifi rack would give me (in reality, two sources at most along with the turntable and preamp if I had the latter) and kept to that - one new thing comes, one other thing goes out.
I think this is the most sensible route.
I'm not quite getting the sound I want with the current set-up. The turntable and CD player are both great (the Sony can challenge any modern budget player), but I need to experiment with amp/speaker combinations in my room.
The Rotel amp is very good in some respects, but lacks in clarity.
I've just tried an Audiolab 6000A, and I think it's awful. It feels like a quality piece of kit but sounds dull, uninspiring and doesn't get the best out of either pair of speakers. It's being collected for return today.
I'm now thinking of the Denon PMA900HNE and Cambridge Audio CX-A61 - both brands I've had success with in the past. My favourite Denon amp was the PMA720NE, and I loved the CA Azur 740a I had. The Denon offers HEOS, which I like, but the Bluetooth isn't aptX HD. The Cambridge offers aptX HD Bluetooth, and a good DAC to plug my Node 2i into.
The other issue is my room, which seems to accentuate certain bass frequencies. I am toying with the idea of going really simple with a NAD C316BEE v2.0 or D3020 v2.0 and opting for some little Dalis. I've had success with NAD amps and Dali speakers before - I actually loved the Lektor 2s and Spector 2s I had, and having used the latter in far from ideal positions I think they may be a good option for my current room. They're a well behaved but engaging little speaker, but then with the NAD I could stretch my budget to the Oberon 1s.
Dali also work extremely well with Marantz, and the PM6007 is a bit of a bargain at current prices.