Man between two eras

Bit of a conundrum, Newer technology or vintage? I need something that will last a long while before upgrading. Will be buying used and don’t mind having a vintage amp serviced/cleaned, caps replace and so on. Must have phono as well. Taking this all in to consideration my budget is $500.00 to $900.00. Listing area is a loft (small area but like high volume at times). I would prefer a unit on just the slightly warm side, not to dry or analytical. Driving some refurbished Dynaco a25 speakers may change at a later date. Flexibility is good.

Looking for a receiver or an integrated amp. I am considering the following:

Rega
Musical Fidelity
Bryston
Arcam

Vintage
Yamaha
Pioneer
Marantz
Sansui

Thanks for the input,
Happy Thanksgiving!