I don't know anything about them but i use a Bluefin that is designed by Superchips Ltd. It works very well in the midrange and pull away. Good on mpg too.
I have had my Peugeot remapped and i'm very pleased to say the least, however, one word of warning, beware there are a lot of cowboys out there that will come to you and charge around £250 re. remapping the ECU, make sure that if he is genuine he will do a copy of what is on the ECU on a hard disc for you to keep, and then he will go through with the process of remapping your ECU. Anything going wrong(it should not) you have the original ECU settings to up load.
No probs there happybonzo, no change in premiums or anything else, it just makes the motor/engine more flexible/responsive or i don't what other words i could use, its definetely more pleasurable to drive especially on some of the very long inclines you come across on the continent. And some of the cols over the alps.