As much as I like boons, I honestly never use them. It is just another extra thing to carry around and fumble with. They sounded amazing to me at first too, but eventually most mentalists tend to stray away from using them.
Though I suck and can't do it, I would prefer to use PW if I had to choose.
As far as boons go, the standard type boon that is very good is the Someredin. I don't own it, as I have a Lincoln best Boon and a Sam Dalal type Swami, but I have been to Ronjo's a few times and have played with it for a good hour or so.
The Lincoln Boon is the most expensive one, but also the easiest to use in my opinion besides a Swami. Only problem with a swami is if you bite your nails once, your screwed for a few weeks.