I agree with the above. I've used KA, the plugin, as well as auto_Clr and IHCCLR (essentially, a modified Auto_Cleric). For me, after experimenting, I always go back to IHCCLR. It's got some issues with pet heals, but over all, it's rock solid healing. I use KA and IHCENC for my enchanter and both work well. I could live with either one and not regret it. KA11 is very good with my berserker, but I also use IHCBER and love it. Once log parsing is back, I'll be better able to decide between the two.
Now, the IHCClr and auto_CLR isn't going to do any DPSing to speak of. It's totally and strictly focused on healing. And (to my knowledge) hasn't been updated to handle some of the recent TBL spells. I use the TBL buffs via downshits and updated my version to use the latest dissident blessing over undying life. They may have updated them.
I'm pretty sure KA would heal just about as well, but I haven't had the motivation to experiment yet.