I have been using Cheap Joes products for most of my painting supplies since 1994. I started painting with watercolors and my paint, brushes and paper supplies were all purchased on-line from Cheap Joes.
www.cheapjoes.com
I used Joe's own brand of paint and paper - American Journey -and have been completely satisfied with the quality and the pricing. The service is wonderful and I've never had a problem with any of his products.
For the past 5 years I've been painting with acrylics and once again I relied on Cheap Joe's for my paint ( I use Choma Interactive Acrylics) exclusively . I use his brand of brushes and I also use his brand of stretched canvas. I also purchase Fredrix Archival Linen Canvas Panels from Cheap Joe's. This company represents quality in products, favorable pricing and excellent service.
Recently I started using Dick Blick for a specific product, Strathmore Heavy Linen Canvas Paper.
http://www.dickblick.com/products/strathmore-acrylic-pads/
I find this a wonderful surface to paint on and the Linen texture is just fantastic. The pricing is very good and they ship them out very quickly. I'm very pleased with their service.