Just getting started on a budget and need bookshelf speakers/receiver now


I am poor and need some bookshelf speakers and a receiver, all for around $600-$700.  I know this is a surely a travesty for most of you because you are professionals, but... I have to start somewhere and won't come into much more money anytime soon.  I currently have Infinity Reference 2000-3 speakers and a Yamaha RX-395 receiver.  I listen to CLASSICAL music and OPERA.  I'd like to have the speakers and a receiver that can handle bluetooth, my cd player, the tv and computer.  I've looked at Kanto YU6, Cambridge Audio SX-60, ELAC Uni-Fi UB5 and MartinLogan Motion LX16.  But I don't know if these speakers are better than what I've got (I have to think they are since mine are ancient).  I know you will probably say "just save your money," but that won't work.  Can you please help me?
shaunac
Don’t forget the vintage NAD 7020, which is the 3020 with a receiver. Just got one off of eBay and had my guy replace some caps and clean it up. Total invested $200. Replaced my 15 year old Paradigm Atoms with new ELAC Debut 6.2s that we’re on sale on Amazon for $150. Great sound for $350 all in.
emotiva bas-x ta-100 is a tuner, dac, amp and has phono pre-amp that is as good as separates w/50 wpc at 20-20k into 8 ohms at .08 thd for 399 bucks will probably beat the NAD depending on what you pair it with.
new bas-x a100 emotiva receiver has dac, phono preamp am-fm tuner, 50 wpc amp that will blow away that older nad stuff in its price range for 399 bucks on amazon pair it with whatever floats your boat out there for 300 bucks a pair and there is your 700 dollar system.
Check out Creek integrated amps they match well with a lot speakers like the PSB suggested above or many British type speakers. Also read some reviews on LSA speakers you can pick them up dirt cheap now, 2 or $300 and the sound like $2000 monitors. If you can find them Alon petites or XLS Sking ninja modded speakers for 2 or$300. Leave $100 in your budget for some decent used pair interconnects, and some diy speaker wire. You would be surprised what you can do with 7 or $800 if buying used with matched speakers and components, good luck