Albright. I like I can see their prices online vs a lot
Of shops you have to call during hours. I work a lot out of the normal day and like that I can order or quote things 24/7

Depends on what I'm looking for, but I mainly use Albright's Supply, DLT, Charlotte Fabrics, & Rochford

My main suppliers for foam, vinyl, and supplies are DLT and Midwest Fabrics. I do order from Keyston Bros and Miami on occasion. Because Im close to both Midwest Fabrics and DLT I like to order glue and oversize stuff from them and have delivered on their sales runs. Avoiding the hazardous ship charge on 5 gal glue is a nice benefit

Acme for headliners, Electron for tops, Hhydes for leather, GAHH for carpeting and European specific materials. I used to buy pre-formed from ACC but I can buy their stuff online for less than buying straight from them with my discount.

In general I try to order from suppliers that are close for better shipping prices via speedy delivery(in the Midwest only) its 1/2 the cost of shipping vs ups or fedex . I also consider weather my supplier sells to the general public. I expect to be able to mark up material prices. Kind of hard to do that if the customer can buy for the same price that I can. Though that is getting harder and harder to do in the on-line age.