If you look at the comparison website www.iva.com this will show you a range of reviews that people in IVAs already have made of the IP firms acting for them.
It might be useful to read some of the reviews, and the perhaps try a couple out so that you can compare the level of service and quality of advice provided.
hey chris-just wanted to welcome you to the forum
if youre ever in need of support or advice or need a rant this is the place to be-we're all friendly and please keep posting [:)]