Did you/do you use these much, and what do you think of them?

I have all three but I've hardly used them. My main complaint is that they were too easy to get hold of. I know they are supposed to be X-2's equivalent to summons, but I would have liked it if they were more of a reward for something, and you didn't get them so quickly/easily.

I thought a lot of the abilities in some of them that you started with weren't that useful (although I guess you can learn more useful ones), and I found it quicker just to use my characters.

Yeah, sorry if this has been a topic before but I'm slow. =P