Getting A Minor Dent Removed - Advice Welcomed

[geoffb]

Hi guys,

I was travelling during the incredibly windy weather on Thursday and, apart from having to turn the car around several times to avoid fallen trees and having various bits of debris blow over the car I thought my Corolla had escaped unscathed by the time I tucked him up in the garage but, after a wash, it looks like a piece of tree has put a small but noticeable dent in the bonnet

Anyone here had experience of using one of those dent/scratch removal firms e.g. ChipsAway? I want to know how good they are in practice at removing dents (as opposed to scratches) before I think about trying one!