I don't recall the lines being to long except where the lines intersected. I am a huge fan of HOHO tours I think that they are great, but I was not impressed by barcelona.
We are buying the T10 pass that gets us 10 rides on all public transpot and I am told that we can share this. I have marked all the metro stops and bus route#'s near the places we are visiting. I have a good sence of direction and can read maps easily, we have done this in many cities successfully so I am looking forward to it! (we even rode the public buses in St Petersburg!)
would you mind sharing which places you have planned out to visit? I'm so behind with planning barcelona.... but since you have been there before your list might not be similar.......
Park Gueill, Aquarium, the cathedral that is still not finished.... familia.... something? cant remember the name and find churros & chocolate for Gavin--- that is my list to date

have to run errands..... the kids all have spf water shirts.... but want to find one for me