Atari 5200 vs Atari XEGS

I currently have an Atari XEGS and I'm considering picking up a 5200 to complete my Atari console collection. Since these systems play for the most part the same games but in different cartridge format is it worth picking up a 5200 and getting some referbed joysticks to play the same games that I already have on the XEGS? I do have a number of 5200 carts in my collection.