Plenty of good recommendations. If you have a MM cartridge, consider the Heed Elixir. Over budget, but you have good speakers and I would advise you not to cheap out too much or you will hear it. My advice is to buy new so you have dealer support and warranty and spend a bit more to get something you will like a few years down the road.
Best Integrated Amp (for me)
I recently upgraded to a Pro-Ject Classic turntable. I currently own KEF LS50 bookshelf speakers and a Nikko NR-719 tuner (from the 1980s).
I'm interested in upgrading to a better-quality (and nicer-looking) integrated amplifier to pair with my turntable and speakers. I love things that are really simple and classic-looking (but of course I also want it to sound great). I'm looking to spend somewhere between $500-$1000.
Any suggestions would be most appreciated!