I'm about to do my bed too and have been deciding between the different vendors for wood/strips/mount kit, etc... There does seem to be a price difference on all that stuff between some of the different companies, though I don't think there will be a quality difference.
In the process of restoring my '51 1/2 ton I've spent thousands of dollars with Chevy Duty on over a dozen orders and havn't had any complaints with the service. I have gotten a broken part (mirror), I've gotten a few of the wrong parts (glass), and I've returned several things I decided I didn't need for one reason or another. Once they shipped half my order and forgot the other half. I called them up and the shipped it out that day. CD has been very good about crediting me for that stuff, taking back the returns, etc... They do 'back-order' parts that aren't in stock and then automatically ship them to you when they come in and I wish they would call you to tell you when they do that. However, I could call them before ordering on-line to confirm the availabilty and havn't, so I can't complain too much.
Recently CD mentioned that they are changing their website so that when you order online they will keep track of the things you have ordered in the past, which will help you keep track of the cost of your restoration and prevent you from re-ordering those small parts you've already got floating around in your garage somewhere.
I also use Jim Carter's a fair bit (great!), have gotten a few things from Chev's of the 40s (pricey), LMC, Obsolete (Nashville), Bowtie Bits (great source for used stuff, like horns/radio delete plates; and speciality stuff, like specialty patch panels -ie just the corner of the toeboard/kickpanel/floor board), Patrick's (amazing source of information and very helpful), Langdon's, CPP (brakes and suspension) and of course E-Bay. I've been very happy with all of them!
