There's a $50 rebate on the 76 series now (through Jan 15th) making the net price only about $20 more for all that extra memory. Hmm. That sure is tempting. The rebate brings the price down to about $400 from amazon.
I think I lost my Rino120 yesterday. I haven't given up looking yet, but if I can't find it tomorrow, I think I'll buy a 76CS.