I think what you're looking for is pretty common in current ATX v2.xx psu...so now you just narrow down price and if you want a really pretty psu
edit: to get you started...
this is a brand site, not neccessarily a selling site. But you should always check manufacturers and then for places that sell them.
not sure if it has all the connectors you need but...
Maybe my next build or cosmetic change will be with these...I think these guys make the best looking psus...and with time maybe they'll be rated among the top 3
keep in mind too, that the 24pin connection is often described as the smaller 20 and the supplemental 4