Interesting responses.
My opinion is this:
Angels can be just as dangerous as demons, and they can backfire just as much as demons.
The thing is, you have to approach ANY entity with respect but also with power and confidence. It is a delicate balance to have, but it is paramount.
So ultimately, it does not matter what you call them. Angels or demons - they are entities with slightly differing characteristics and in different currents, with huge individual differences, but they all provide results.
As for the angel VS demon thing - again, it doesn’t matter. Most of the people here shy away from angels, even though angels don’t really have much to do with Abrahamic faiths in my experience.
Just as how demons are “demonized” and misrepresented, angels are too.
Demons are most often considered evil, and that they want to suck your souls out. Angels are most often considered as the messengers and servants of the Abrahamic “God”. Yet, both of these are complete and utter bullshit.
True LHP is embracing everything that is useful and stripping illusion - not replacing one bad with another bad, as it often happens when a new magickian starts working with “black” magick, flips off Christianity, demonizes angels, and starts working solely with demons.
So, to finish - try all of them out, choose what energy vibes with you the most. If you like them all, work with them all, just be careful when you start doing hardcore pathworkings, and those currents that require exclusivity. Even then you can talk things through with the entities in a current and see how you can best work with that current and another one.
Hope this helps, but do explore for yourself. Personal experience is of utmost importance in Ascent and magick, and everyone’s path is different. 