Technically those machines don't use pods, but actually use capsules instead. From what I've read capsules will offer more freshness than a pod since it's sealed. IMO neither will give the same results as a good grinder and a semi-auto machine. Also, with pods you won't have nearly as much selection or convenience as you do with whole bean availability.
With that being said, if you want a decent shot with minimal effort and cost, then these machines should give you just that. Later!