You could try cummunicating with them through angel meditation,i don't know much about angels though but maybe goldenrose con help or maybe someone from angelic tucth.
Bad idea dude i wouldn't try it angels are very manipulative selfish beings but if you cant resist i urge you use caution. I would have an Anti-Enochian symbol on you jest to be safe the symbols will offer some protection from their trickery
angels seem to have an unusual amount of characterisitics of vampires i covered it in my vampire thread in misc topics. I would skip angels personally it be safer to communicate with demons. Someone i know evoked archangels and i assume the offering was his energy regen because he is a proud physic vampire.
It is not safer to contact demons than angels! First off if we go by the orginal meaning of demon then a angel would be a demon because the orginal meaning of demon is a spirit in general (or atleast thats what ive heard alot on this site) But I think we are going by the modern day term of demon and angel. In that case it is not safer to contact demons!
While angels may be stuck up and strict in general, they wont try to work against you if they can gain from it. Which in my experence is somthing most of the demons I have had dealing with do or did.
Well the word demon derives from the Greek word daimon who were not evil by their nature (http://dictionary.reference.com/browse/demon), and religious texts (i.e. the bible and other texts) state that the first demons were angels at one time (well mostly, supposedly the Arch-Demon Lilith was mortal once). As for trusting and working with them, it depends on which one you are working with, just like any other entity, though caution is always advised. I have invoked Michael on quite a few occasions, and have called him to aid in my spells in the past before I started on my current path without any problems, but it may not go that way for everyone