+1 on SmokeRainbow for sampling new liquids
However as your tastebuds change and having the opportunity to be able to have a variety of flavour, unlike with the cigarettes, you may want to have a range to pick from rather than staying with just a single flavour
It's a shame if you can't sample flavours at your local shops. I've bought mine from No-Match in Warrington and Tablites in Manchester - and both are happy to let me try as many as I like before buying