Good advice in the two posts above murdoch. EDIT has an excellent price on the Vapolution, which is solid unit. I used one for about two years. It gives you all glass vapor path with the AIW bowl, although the narrow bowl with no screen means touchy loading with small pieces instead of ground herb. I don't know how EDIT sells it for $150 US, but it's a good deal for UK buyers.
Vaporwarez Vaporcannons aren't being made anymore but Vaporstore is honoring warranties and still has some stock. They do ship internationally. For a whip vape in this price range I'd go for the DBV from 7th Floor though. It seems to have taken the lead over box vapes for discriminating buyers. Comes with a really nice storage bag too. I have its big brother, the SSV, but I did give the DBV a trial run and prefer it over any box unit I've used.
If you want a unit that's likely to be both a classic and trouble free, you can buy a Purple-Days directly from Purple-Days.com, since you're outside of North America. Can't beat it for measured doses and efficiency. Just decide what fits you best. You can find demos of all the units mentioned on youtube.