Hi Beardedbruce.
It would appear to me that there are many different interpretations of what angels actually are but consider this. The Bible actually tells us they exist as the guardians and helpers from God whereas the demons are of the devil and working for evil. Some of the very personal replies I have had on PM indicate that whatever they are they "help" people positively.
I personally believe that Angels are of God as it is the only documented evidence of such positive beings but each to his/her own I suppose. Everyone(who has any kind of experience of such phenomena) has a relevant opinion. Be Blessed.