We go to Hutto (near Austin) pretty often, my daughter and son-in-law live there. There are a lot of HEB’s on the way. They are a great grocery chain, and nice folks.
I like HEB’s house brand of Salsa, but most of the time we use Pace's. I have been known to make my own salsa, I have a 3 year old Jalero Jalapeno in my sun room. It is still making peppers.
I also have 5 Pepperoncini peppers in my garden this year. Started them from seed I bought out of FL.
Julio's is better than the HEB brand salsa (which I also like) - very smooth texture, no chunks - must be kept cold some it might be difficult for you for traveling. It originates out of San Angelo and they have a fast food joint there but we've never stopped as we have driven through...still plan to one day.
I also like HEB’s store brand salsa for a ready made. I have tomatos getting ripe, so homemade salsa is coming soon.