I love it when I see any closures or bad buisness for LDS pointing at the internet as its source. Nevermind the number of Dive shops in the dive mecha of "North Central Texas".
Buisness is an ever changing thing, you change with it, or die out, those shops that decided to not participate and fight the "internet" as it is a bad and evil thing I'm sure will feel the crunch more than other shops that decide to compete on price or dabble in a bit of e-commerce themsevles.
If your looking to get gear serviced try CB at Grapevine Scuba, he will only service gear he sells and take this from me, if he refuses to service your gear, he is doing you a favor, you do NOT want a LDS servicing gear they do not sell.
I have some history with Grapevine and would recommend them as a shop, I won't allow anyone else to touch my Atomic, I'd sell it and switch to another brand if Grapevine wasn't around.
I have not had good experiences with Cuda or We B Divin.
My experiences with SIS is limited, but would not hesitate to take gear there for servicing as their staff is friendly and they have o2 serviced equipment for me and I haven't blown anything up yet
Scuba Connection in Keller has friendly staff although I have no experience there with any gear purchases or service.
I have heard good things about loan star, I have not used them for anything but have spoken to a couple of their staff that seamed knowledgable.
I used to be a Tuckers regular