Hi guys. Thought I'd introduce myself. I'm Lawrence. Just starting out window cleaning.. Really looking forward to it. It seems a mind fuels out there for equipment and advice.. I'm gong to start traditional window, may upgrade to filtered system if I can get a big enough round. I'm hoping you might be able to steer me in the right direction. Ladder and size. I feel I should buy a 'A frame' ladder, they seem to have a good reputation on here. Not sure about size though. I'm sure this knowledge comes with experience, but I'm trying not to waste money on things I might not need. Any advice would be great. Thanks in advance.