Some roasters definitely do roast light. Steve is one of these I think, and that for SO blends thuis really works well, and makes for some distinctly 'uncoffee' like coffees sometimes. Almost everything from Hill and Valley is roasted a lot darker and I have to admit that if you can get their Bourbon Espresso fresh and nail it, it is exquisite, really full and chocolatey. However the SOs can be roasted almost to the point of anihalation. So for me Steve for SO, and H&V for Esspresso blends if you can get them really fresh.
That said i havent tried Steve's moe 'exotic' Espresso blends for a while so i think i feel an order coming on.