Hello, I've started using braid last year when I started fishing again but I have only used it for spinning and plugging and a few times when bottom fishing. I have never used it on a multiplier, the problem I can see is it has a tendancy to cut in on itself unless it has been wound so the coils do not sit too close to each other if you get my drift.
Modern fixed spool reels cope with with braid pretty well as they lay the line "criss/cross" so to speak, to prevent the braid biting in on itself.
If you do decide to try braid I found that you must use some mono backing to prevent it from slipping around the spool and if you pull for a break use a rag or bit of stick as it'll slice into your fingers.
Personaly I think it's great for spinning work but the lack of stretch means you have to go canny when a fish is on. I have used "fireline" and found it ok.
Sorry for rabbiting on, I don't get out much, but i hope that this is some help to you.