What are the the best, most compatible plugins to use with atahualpha?

Hi everyone, I have just started using atahualpha and it looks great. I was wondering what the best pulgins are to use with it. By that I mean which plugins have been the most straightforward and easiest to use without having configuration issues, basically "plug and play", and you would recommend.

Are there any which have caused problems or have been difficult to set up, and have you got any tips on how to avoid problems. I have installed Seo Platinum. as my first plugin in atahualpa and it is running very well with no problems and I would recommend it.