i buy all my supplies at 
www.inkjetart.com great prices, free shipping (over 99$), they are also very knowledgeable about all things regarding printing/color....
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I concur with you.  I buy all my papers except Epson papers from them.  They are a great place to buy sample packs of 3rd party papers--and their 'own' also.  I haven't tried their profiles yet. 
I am also considering  placing an order for the new Epson 3800 with them too.  You can order without a deposit or with a non-refundable $100--BUT--if you do decide to cancel the order, you can apply that $100 to anything else they carry.  That's a reasonable deal to me.  The only thing that is holding me back is the length the printer can print--and the feasibility of cutting roll sheets to accomodate a 16 x 24 print (with borders--so that's  17" plus--mostly I would use 17" x 22" media though)
Diane