Here are two of my recent blends that while not based on duplicating any commercial blend/roast per se have full flavor range.
First is/was my Summer Jam blend. This one got raves at the End fo Summer Espresso Jam I hosted. Les rated shots I pulled of it in his top 5 shots for 2006. Deep smokey base notes, balanced smooth and creamy, lively bright fruity high notes. Pre-blend Caffe' Rosto roasted 15 minute profile, 4 minutes equalization drying stage to start of tanning, level 20f/min ramp tanning through browning stages to start of 1st, 6 minutes start of 1st to end of roast, fast cooling.
5 bean blend 20% equal parts:
Aged Sumatra DP
Brazil Cerrado DP
Brazil Cerrado CD
Harrar FTO Oromia DP
Kona Premium Coffee Co. Fancy WP
When the 10# of Summer Jam blend recently ran out was going to mix more but instead decided for a change. Added a bit of funk to the base and changed the high notes for some berry/cherry wine. Pre-roast blended, roasted same profile. Only done one batch so far and only made it out to 7 days rest. (Didn't touch until young 3 days rest) Yesterday Greg, a local fellow home roaster with a Rocky & Silvia a couple years, said it was the best straight shot he's ever had, far better than any shot of Hairbender he's had from numerous different 3rd wave Cafes around here. I won't go that far, but it does rock!
Excellent full smooth symphonic taste range, outstanding creamy mouthfeel. While I don't necessarily care for Malabar as the primary bass notes, I do like the bit of funk it added with the Age Sumatra.
6 bean blend (of strange percentages, don't ask why!
Aged Sumatra DP 17.4%
Monsooned Malabar 8.7%
Brazil Cerrado DP 19.7%
Brazil Cerrado CD 19.7%
Kenya Gethumbwini 17.4%
Panama Eleta 17.4%
NOTE: If you don't have a good Aged Indonesian, I'd suggest trying 50:50 regular DP Sumatra:Malabar substitute. Won't get the bit of smoky notes but I think should work ok.