What's your opinion on using curved monitors for design work? Have you had any distortion issues with them?

I currently use a curved Asus PG348Q (21:9, 1440p, 100Hz, G-Sync) which is a gaming monitor, since I don't game much anymore and getting into graphic design work I was thinking of selling it and going with a Dell UP3216Q (4k, 99.5% Adobe RGB, 100% sRGB).

Thoughts?