I agree with BlueFlame, I've had a few small sak's but they've all been eclipsed by the LM micra, of course there's also the squirt which is even better. But being newer costs quite a bit more, especialy in the UK. Which for something your going to carry on your key-ring is really a bit much. It's just a matter of opinion, but I would say that the small SAK's are not really worth it, Unless you can get them cheap (which you can, I've seen a few clasics for under a £10 before). My advice would be don't don't bother with the mini champ.

-james