I have one of Terry's test buffing systems and I'm delighted with it. I can't unfortunately say how it compares with others on the market, as this is the only one I've used, but it is cracking, and I have shown it to one other person who has experience of other systems, and they seemed to think it compared favourably.
There's also another Forum member, who's views will be a lot more valuable than mine. Watch this space.
At the moment, I don't have anything which will do the insides of bowls, etc, but I believe Terry's working on something for this.