The most experience I have with plecos are the Commons and Chocolate Albinos. I just started with an L240/L007 about a couple weeks ago, I'm not 100% on which one it is. I haven't had any that stayed hiding for very long periods of time except for the L240/L007(He only comes out for food). You may not like the Commons or the Chocolate Albinos for how big they can get, but Royal Plecos or Bristlenose Plecos might be a good choice. I really don't have any experience with those two, but from what I've seen, they don't seem to be very shy. If you don't mind the size, Chocolate Albino Plecos are real nice, they get a little longer than a foot and tend to be more out in the open than other types of plecos, same thing with the Commons. Commons can get pretty big too, but I have yet to see one get that big. I have several young Commons alongside a foot long Common and a Chocolate Albino that's a bit larger. What size aquarium do you have?