Triangle Suspension Brand Leaf Springs?

I'm looking at swapping the leaf springs in my 1999 4wd Tacoma. Being cheap, I thought I'd look around locally and see if I could find a way to avoid spending $100 on shipping. A local spring shop has standard duty 4 leaf springs made by Triangle Suspension in PA. At $130 each seems a good price, but I don't want to go through the trouble of replacing just to put junk in. I'm also strongly considering springs from General Spring (but again, shipping is high).

Has anyone heard of or used springs made by Triangle Suspension?

FYI: Not looking to do a lift, just some occasional towing and minor offroad (dirt roads).