Travellers Cheques or a Travel Money Card [electron visa] for my holidays in Canary Islands .?

Noticed the post office do a travel money card which you can preload with Euros before you go,says it can be used in shops restaurants and cash machines.
Anyone used one in Tenerife ?

If you plan to go down the prepaid rout, you would be better getting a FairFX card (www.fairfx.com). The exchange rate is significantly better than the post office’s card. Its also a proper Visa card, so you can use it to buy stuff in Tenerife; hardly anywhere in Europe accepts the electron card.

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