Everyone is talking about all these alternatives to RP2 but not giving any actual examples. As far as I am aware, there is not any other mod that does redstone like RP2 or anything similar to it. Honestly if I had a mod that did a redstone system like RP2 then I would not really care for RP2 all that much because the machines and pipes are not that great compared to what you can do with a combination of IC2, AE, BC, TE, ect..
Although I do like the microblocks system of RP2 A LOT better then Immbis Microblocks, if Immbis updated their microblock system to be as complete as RP2 and be compatible with the blocks added by other mods such as Forestry, Railcraft, IC2, BC, ExtraBiomes/Biomes-o-Plenty and so fourth, then Immbis would be amazing, but unfortantly it is a very limited alternative to RP2.
So yeah, there are mods that do the same functions as RP2, but RP2 is more powerful in those functions I would say.
(I really would like something thats 1.5 and does redstone like RP2)