I am upgrading from the series 0. I just started swimming, so I really want one that is waterproof. I ended up buying the series 3 w/LTE with the new loop band. I REALLY do not want to pay the extra $10 a month. I originally was planning to buy the Nike w/o-LTE with the new loop band, but the Nike ones with the new loop only comes with LTE. Then I thought about buying the other non-LTE Nike one and buying a new loop band. Then my friend said if I am going to be buying the band separately, it is only $20 more to buy the LTE one with the band I really want. I figure that I will activate the LTE and try it for 3 months for free and then decide if it is worth it or not.