Apologies if this has been asked before.
These seem to be very similar but the Patapum is over £15 cheaper for the main carrier. I'd like a carrier possibly for the baby (which adds an extra £12 on to the Ergo price) but I'm thinking more about when it is 7 months old next summer and we are on holiday. We may need to swap the baby and DD (will be 3) around in the pushchair.
As the Patapum also comes as a toddler carrier is the price difference reflected by the fact that the Ergo would see you all the way through whereas the Patapum is only really suitable for approx. 13 months (5-18 months)?