Upgrade to Wacom Cintiq Pro 27?

Is it worth it? 

I've been using a Wacom Cintiq Pro 24 for over four years and it still works ok though the screen is getting pretty scuffed from a combination of heavy, repetitive use, a few mishaps with curious cats climbing on it and 4 home moves over the years. I've been seriously considering buying a new Cintiq to replace it and I'm wondering if I should stick with the 24 model, assuming I pull the trigger on something new, or if it's worth spending the extra money for the Pro 27 (and stand)? In other words, is the jump in screen size, features and quality worth spending around 1800-2000 more than the 24?

Thanks in advance for any advice/insight.

Jason