Dear sir (Tyler F), you are the rudest, most disrespectful person I have ever seen on this forum. That aside, back on topic:
I must say, I really don't care whether I use BC or RP2. They both have different purposes. BC is good for certain processing lines that require gates. RP2 is good for sorting because of its clean redirection system. Opinions almost always lead to flame wars. I was going to make a long, boring post about the pros and cons of RP2 and BC3, but then I decided against it. TL;DR (Whatever that means): BC and RP each have their uses, places where you can use RP and places where you can use BC. It is pretty easy to move items from one system to another, with transposers and obsidian pipes. I respect that you like BuildCraft more, Tyler F, and I respect that you like RP more, Lambert. I have one thing to say to the both of you, and all the others on this thread. When you like something better than something else, it's OK, as long as you don't start saying mean things about the mods. Lambert, BC is improving, which is why I use it. Tyler, RP2 is also improving, which is why I use it. Eloraam works hard and long on her mod. So do the developers of Buildcraft. Please, guys, don't argue about a topic like this. If someone refuses to listen to calm argument, then don't let it become angry, rantish argument. Just leave. Anyway, that's all.
EDIT: Now that I think of it, this did become a long, boring post. Even the TL;DR became long and boring, and it is supposed to be the short summary (right?).