Hello. I am wondering about Soul swapping with procs. Does it copy the current dots power or puts up fresh dots?

I've seen a lot of debate over the best use of the talents Nether Tempest, Living Bomb, and Frost Bomb. I'm sure by now many of us have crunched the numbers, seen the simulations' data, and experimented with each ourselves in game.
I definitely want to be corrected if I'm wrong, but what I gather from what I've read is that these talents are truly situation based. Many of the arguments revolve around how many targets there are and the combination of these specific talents with certain class specifications.
In order to gain a better general understanding of these, I'm wondering how other mages use these talents, in what different ways you use them, and what works for you. One thing I often do not hear considered is how comfortable the talent is for the player. Obviously this is secondary to anyone in a serious raiding guild, but I'm very curious about what works for others.
In which class specification do you use which talent? I'm not posing the question seeking an absolute answer; such a query would incite further debate. Really, I'm asking which talent you choose and why you think it fits.
I know most of us would probably agree that it's situation based, but I'm wondering if there are any examples people could share of experience where this was demonstrated.