Because I work in the area I am able to know about new restaurants, and this was one. It's in the spot Sig's was (on Water Street, behind Main St.)
My friend and I went on a Friday night without reservations. There were tables open (at 7pm) so we got one right away. At first we felt like we were getting great service, but after having plates almost taken away while we were still EATING I was getting the impression they were just trying to turn over our table. This would have made sense if the place was packed but it wasn't. The entire time we were eating there was at least one table open and the bar wasn't full, either. This always annoys me, especially when we were going to have everything form starters to dessert and be spending some money.
The margaritas we had were the house version, I think they had a Cointreau floater. They were excellent, tasty and strong. The guacamole was ok (mine is better), chips were good (seemed like they make them there.) We split a three taquito (sp..) starter which was supposed to have a different meat in each one but all tasted the same to us. We also had some clams with chorizo which were good, but without the chorizo wouldn't have had much taste. I had a skirt steak with black bean salsa main dish which was great. The steak was cooked rare as requested, and my friend enjoyed her quesadilla (which I didn't try.) We had some chocolate cake for dessert which was also great (I doubt this was made on the premises.)
Bottom line: The best parts of the meal were the drinks and dessert, if I want really good Mexican/Tex Mex food I'll go to Coyote Blue in Higganum instead. It's a nice change for Chester, so they were smart to open with a different genre than Du Village, River Tavern, etc. I'll hit the bar after work for margaritas and maybe the skirt steak, but they need to work on the service, nobody wants to feel rushed though a $150 meal.