Well I'll see about selling the pioneer tho need to sort the dvd drive out as sometimes says no disc. I have no idea what to look for tho second hand for av amps and speakers tbh. Any suggestions like a few for av amps and a few speaker setups like brand and model info etc somit like av amp no more than 50 and same for speakers. If speakers would be better for 2.1 I might consider that. Keep in mind got old bloke upstairs as live in a flat so nothing too booming.
When it comes to AV receivers, at your level, all you're looking for is an AVR that has multiple HDMI inputs.
Obviously, you at LEAST want two HDMI inputs, but the complete lack of extensibility means if you bought a two input HDMI AVR then you'd be facing the same problem a year down the line when you want to add another device.
Saying that, the problem is a lot easier to overcome because you would simply need an HDMI switch (5 port ones come in at £40 mark).
Spending £50 on an AVR is probably a bit unrealistic and I think the minimum you'd get away with (unless you bought off a friend that was just wanting rid of an old one) would be £150 mark. Even then that's pushing it when you factor in postage (these things aren't light!)
For speakers, don't ask me why, but these seem to be the kind of thing you can pick up for free on gumtree sometimes. Hell, I've got a pair of speakers at the moment then I'm willing to give away and a pair I'll be selling. Spending up to £100 on second hand ones should see you a nice pair of stereo speakers. One thing you'll likely loose is the "slimline" look for your all in one speakers. This is due to the fact that "separate" speakers are usually made with larger cabinets to help produce base. It's one of the reasons you'll notice such an improvement over your current setup.
Buying a sub (for your .1 of your speaker setup) isn't 100% necessary with separate speakers because of this and in my flat, none of my three setups include a sub.
Consider this though. If you'd be happy with 2.1 sound from a new system, why not just connect your DVD player and Android to your HDMI in on your TV and the use the optical out from the TV to your sound system. You'd still get 2.1 but not spent any money.
This would at least tide you over until you can save some cash for a system with a slightly longer life span.