What do you guys use? I was thinking about finding some formica scraps from a counter top manufacturer or something. Reading it some people warn that they might take on too much humidity. Does anyone have any actual experience with it? I like the idea of getting some nice looking boards out of that material ie: marble, granite, wood looking top. Or do I just buck up and pay for a big sheet of garolite g10 fr4 that I will probably not make my way through in a life time?