0.4ms response

I’m looking at getting a new monitor. currently using a 1080p 27” 165hz 0.5ms tn panel and want to upgrade to 1440p, but I’m stuck between going for a 1440p 27” 155hz 1ms ips panel, or a 1440p 27” 155hz 0.4ms tn panel. So my question is should I go for the better colour or the 0.6ms of response...