So I feel like I've noticed a few changes in quality in local restaurants and was curious if anyone agrees/disagrees/has others to add.
Q-Shack - I was the biggest booster of this place from day one. I can still remember the awe I felt the first time I had their beef brisket sandwich, and how happy I was that they did everything right. Down to the wide mouthed trash cans, paper towel rolls on each table...
The last three or four times I've been however I've been disappointed. The brisket was dried out, the sausage tastes sweeter than it used to, the burger was overcooked, there was a general lack of freshness to the food - which was somewhat hidden by stronger (not better) spicing. Maybe this is because of the expansion into 4 (?) restaurants, or the additions to the menu... I don't know, but it's no longer my default place to take guests.
Hacienda - I really only ever got one thing there, the torta de asada. It's been brilliant in the past, but it appears that they've changed their bread (bolillo?). It's too sweet now, and you can really taste the preservatives.
Vin Rouge - I have less specifics on this one, merely wanted to say that I went a few months after they opened and I was greatly disappointed. We went back several months ago and it has vastly improved.
And lastly Guglehupf - I have no complaints. The cafe wildly exceeded my expectations and put my fears to rest. And if you order their eggs benedict you can ask for thicker slices of challah, fold the two pieces together, and you'll be eating the best sandwich in the triangle.