Digital Player Upgrade Options

I have been using the Bryston BDP-1 since 2011 and have been pleased with the sound quality but it is a little slow and lacks features I may enjoy.  Now I am looking to upgrade. The Bryston BDP-3 is certainly an option but I would like to get to know about other digital players that I should look at. I generally buy used components so I am looking for digital players costing ~$1600 to ~$2600 in the used market.