GPU recommendations

Short and sweet;

Ryzen 5600
Tomahawk Max b450
32 GB RAM DDR5 by crucial
Current GPU - rx6600

Important: medium tower by Antec


I was looking at an xfx 6800 but it's too long for my case.

What else could you recommend around 6800 performance and ideally sub £420 budget.

Don't mind if new or used.