isnt it also harder to find parts for the rb?
back in the day I was gonna get a 240 like everyone else. I had a friend who was going to sell his for $750. I was trying to decide the same thing and was checking out Top Hat for the swap and everything. They had the RB25 for like $3,500 or something.
But then my dumbass friend went to Carmax and they gave him $500 for his car, so I scrapped my plans and got a Prelude.
Just thought I would share my car story since I'm bored too.
Anyways, I would go with the RB20 over the SR. I love the sound of the RB, you can get the same power out of them, the RB is built stronger.