Hi cm7 and welcome to the forum
The main advantage I can see of an iva over a debt management plan is that it is binding so creditors can not keep adding interest as they can in an informal dmp.
Also you will pay for usually 60 months and then any remaining debt is written off.
When I took advice I was told a dmp would take me over 20 years which is not realistic and I am now in a 60 month iva which is much more practical for me.
It will help if you post the amount of you debts and whether you are a homeowner or not.
You will need to have around £15,000 worth of debt and three creditors.
Have a look on
www.iva.com for reviews of iva providers, and I am sure one of the experts who posts on the forum will be around later to give further advice.
Good luck
Emma
Be positive & look after yourself, there are more important things in life than debts....
Best Wishes
Emma x