While US carriers are busy strapping garish kickstands and silly new names atop the HTC One series, UK phone retailers are getting down to the business of selling the actual handsets. From today, O2, Vodafone, Three, Orange, and T-Mobile are all taking orders for the brand new One X and One S Android 4.0 smartphones from HTC. As usual, Three will give you the most for your money, though O2's new On & On tariff — which the company describes as its best ever — is also worth a look, costing you £36 per month over a two-year contract, but also giving you unlimited minutes and the One X for no upfront cost. Should you be more inclined to buy the handset by itself, Amazon will sell you an unlocked and SIM-free One X for £489.99 (about $780) or a One S in the same contract-free condition for £414.99 ($660). The choice is yours.