The angled panels are there because I want them there. :P It's great that you found different solutions to my puzzle though. :)

This kept me occupied for quite a while. I agree with Dr Kitty about the angle panels, I didn't need them. This could be made trickier if the walls behind the panels were black so you have to shoot a portal as you fall. All good otherwise though :) Here's my first chamber http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=100607039

Just so you know, the two angled panels in the fourth room (the mostly-white one) are unnecessary. A portal placed high on the wall works just as well.

I like all of your pams thus far. Good job and thanks for the fun!