We supply the Baltic padded type. I'd only suggest this type (regardless of maker) for a 2 year old and probably also a 6 year old.
£23.95 for toddler size, £24.95 for child. Delivery £2.50 if you give me a call. In stock - can be delivered in time for w/e.
The auto-inflate children's ones are OK for older ones - 8-10+. They are a good safe product but you need to consider the remote possibility of the auto-release not working and the child being confident enough to pull the manual release. Just not an issue with the foam type.