The most honest answer is try both and then decide.
You're going to get a whole lot of of fans of both designs give you their reasons you should go for thier choice, probably whilst dissing the other option with horror stories of when they owned an Angel/Mag and it was the worst piece of crap ever.
I've never owned a Mag of any flavor, because I just can't get on with them, I seem to have a mental block with being able to play well with them. I've tried them from Classics to E-Mags and have decided that they're just not the marker for me. That's a personal choice and not a reflection on the Mag.
Against that, I like Angels: cosmetically, maintainability & performance-wise I do not believe there is a better overall package. I've owned one since they first came out (Angel LED #0049!
), have used every model up to and including the Angel 4 & still use them on the rare occasion I play. I've had an Angel that wasn't all it could be out of the box, but a couple of parts swapped and it was fine. Equally, I've had Angels that seem to perform way beyond spec. WDP's support is superb with Angel techs hiding under every rock, so on the occasion that you have a problem, there's a good chance you'll have it sorted on the same day.
So try both and then choose the Angel!
Now, we just need to wait for some fool to start blathering about Vikings and E-Blades.