The problem with the coatings is that they are irrepairable, which is why I (personally) won't build tanks using them. They are essentially a micro-thin layer of glass (not *really* but you get the point), when this scratches, chips, etc - it is impossible to blend the two dissimilar materials.
I don't think anyone ever said that glass tank always break or break all the time. As I stated earlier, a well made tank (glass or acrylic) will last many, many years. IMO, the reason you'll hear of more acrylic tanks popping is fairly simple; many companies mass fab tanks that are somewhat underengineered to be price competitive. They are strong enough to hold water, which is their prescribed purpose. Then, we (reefkeeping community) add MH lighting over the bracing, add wavebaxes, etc., which the tanks were not designed to handle to begin with - remember they were engineered *just* well enough to hold water. What would anyone expect? The other reason for *seams* popping is that they were not built well to begin with, people going too cheap and using bad material - JMHO on this.
My *personal* feeling is that you'll be seeing more and more "standard" glass tanks popping due to Waveboxes as I've been encountering this alot lately. So, if going glass - keep this in mind and engineer accordingly.
I replace both acrylic and glass tanks, probably equally. Some have glass that explodes all over their house and won't go back to glass, some have learned not to use acrylic tanks that are not designed to handle what they plan on putting them through.
Acrylic has a scratching issue if you are not careful; all of my tanks were acrylic (obviously) - never had a scratching issue, but YMMV on this.
In either case, the tank ends up being an average 0f 10-13% of the final project cost. This is based on yrs of experience in the industry and my own persona experiences as well. While we are aways trying to save a buck or two when we can, your tank is what is holding it all together and a well built tank is, in fact, your insurance policy. IMO, you can skimp on many things but the tank itself should not be one of them.
As for the price differences between mfrs fo the same tank - I cannot comment as the wholesale glass pricing and finishing costs are beyond my scope. I've never seen tanks from the 3 mfrs you mention right next to each other to compare quality so simply don't have a basis for opinion so I would defer to experiences by others.
HTH,
James