Hard to say without knowing what is available at Myer. Do you own a coffee grinder? If not you should definitely be putting any additional funds towards that.
Gaggia machine has commercial size (58mm)filter that are unpressurised. Not sure of the size of the Saeco but assume they are narrower, also pressurised. Apparently they can be modified to be unpressurised very easily.
Biggest criticism of the Gaggia is the aluminium boiler.