Thanks all for the interest
, I'll get the photos/plans done then that will help with things.
Budget was thinking it would be minimum of £1000 I'm just a casual user with ears ringing from too many years in datacentres before ear protection was a thing and about to head into my 50's. I'm assuming anything these days would be better than the current 20year all in1 old system which to be honest I'm happy with ( it did get top score all those years ago in some homehifi magazine in a budget comparison lol) FL and FR speakers sat on the floor currently. I do have a desire for in wall speakers but nothing further than they look fancy, especially as I'm happy with my currents that are sat on the floor
Your Samsung might have been considered decent against similar player/amp + spkr kits, but even 20 years ago a separate AV receiver + 5.1 speaker package would have been noticably better.
The same sort of DVD-amp head unit and speaker kit is rare now. Sound bars have taken over most of that market and even eaten into a lot of the lower-end AV receiver market too. It hasn't helped that there has been a rapid succession of standards changes as new features have come out.
Ten years ago the biggest recent change was getting ARC for TV audio. Since then we have had 4K, Dolby Vision, 120Hz, VRR, eARC and Dolby Atmos.
The other big change has been the move away from physical media to streaming. In some ways that has shifted some of the burden of compatibility away from the receiver and on to the TV.
It's not uncommon now to find sources connected directly to the TV which then passes audio out via ARC or eARC to a sound system. Mostly this is in basic Dolby Digital (DD) or DDplus if Atmos compatibility is required.
It all sounds quite complicated when it's dumped in your lap this way, but it helps to understand that the best sound you'll get from streaming and TV broadcast be it Sky / Virgin / Freeview or Freesat is DD or DD+, and thats something an ARC or eARC connection can handle with ease. This means any AV receiver from the past 10 years roughly can deal with that sound.
Physical media in the form of Blu-ray and BD UHD still holds the high ground in terms of picture and sound quality. If you want to keep that sound quality then you can't just pipe the signal in via the TV and expect ARC or eARC to cope. ARC won't, it's that simple. It maxes out at DVD audio quality, and even then DTS isn't widely supported.
eARC will handle hi-res Dolby formats, but support for DTS is patchy depending on the TV brand.
A smarter solution is a player with dual HDMI outputs. One HDMI does both picture and sound as normal, but the other is audio only and it does all the high-res audio formats. Take a player like this and suddenly it doesn't matter if the receiver can pass Dolby Vision. The receiver isn't handling any picture elements; it's only handling sound via that 2nd HDMI out. The picture part of things goes straight to the TV. That solves the compatibility issue very neatly.
It's not all plain sailing though. Games consoles aren't quite so accommodating.
120Hz, VRR, HDR, ALLM; these are consoles latest enhancements to picture performance. You can route signal via the TV first, and that is the best solution if you wish to minimise the effects of picture lag, but sound might have to take a back seat in some cases. If the console outputs multichannel PCM for uncompressed surround sound then you will need eARC on both tge TV and receiver, and also to check that the eARC enabled TV passes multichannel okay. Dropping the sound level down to. DD solves all this, but DTS via ARC or eARC isn't as widely supported.
Don't worry about trying to remember all of this. Just tell us your plans for sources and we should be able to give you a simplified road map of how to get to the best destination.
Whatever happens though, even if your sound is at DD level, the better quality of sound from an AV receiver and good speaker package will blow your socks off.