We have a couple of the Bam carbon fiber cases in the family (vln and vla). Good protection, and light for schlepping around to rehearsals. But the players always revert to their Musafia cases when solid protection is required (ie on tour, or long drive). They all have instruments worthy of GOOD protection. My wife has tried a carbon fiber, but the temperature protection isn't there, even using a silk bag. We have more extreme cold here than TX, and summers get HOT. She has had a Musafia dart for her violin for for about 19 years (bought it as a demo case) that she uses all the time--she plays violin in 2 orchestras and viola in another. We just had the violin case refurbished at the first of the year. The only issue was wear on the outside case cover and trim--the inside of the case held up VERY well. Very reasonable cost, and the case is better than it was new (with the better cover material, improved bow spinners, improved latch, etc), so I expect she will get another 20+ years out of it. I know I have seen a double-case on the demo/refurbished list in the past for Musafia, but it isn't often, and there is always the issue of viola fit. If weight ISN'T an issue, and protection IS, I think Musafia would fit the bill. You'd probably need to custom order a double, and you could order a nice, unique lining (maybe find some appropriate silk there in TX). One of our daughters has a silk snake-skin lining (it was a demo case too). I can't imagine there are many like this, she loves it, and I am sure it would be popular in TX! :-) Ultimately for us, the need boiled down to protection, and the desire to have a case that holds up over time. Musafia provides both for us.