Thanks folks.
So, I have 1.25 upto 2" so far, that is a big difference in price between the two. Any solid info available anywhere?
Just to fill in a bit more detail in case it makes any difference, there would be a stainless steel angle frame with the acrylic front panel within that, so it would be supported all the way around. I'll also fix the height to 30" rather than 36" if that helps.