First of all: A 135mm lens is considered "normal" for 9x12cm, which is the European (read: German) equivalent of 4x5". Having said that, I have a (German) Voigtländer 9x12cm plate camera with a 150mm Voigtländer Heliar on it...

Back to the way we see: I also find that I prefer a 210mm on 4x5" - or 300mm on 5x7. I tend to use the "normal" lenses less often, and wide angles even less. I hope to "rectify" this using my new old 121mm SA on the 5x7 for a while, at least I can't blame lack of coverage when I decide on a longer lens!

Most of the photos I've taken with wide(ish) lense look like they should be enlarged to 4x5 meters or so to look right. It's something about the perspective, perhaps?