I have been to both Emeril's and Tschoup Chop. I liked Tschoup Chop a little better, but both are excellent. I think the atmosphere is nicer at Tschoup Chop. The restaurant is really lovely. Tschoup Chop is located in the Royal Pacific Resort and Emeril's is in Citywalk.
It's been a couple of years since I was at Emeril's. We were at Tschoup Chop in July. I would say Emeril's might be a little more expensive than Tschoup Chop, but I may be mistaken on this.
Is it worth it? I think it is, but you may not. Depending on how you order (drinks, appetizers, dessert) it can get quite expensive. If you just have an entree and split dessert, it wouldn't be too bad.