Voted other. I think they are a great idea, but maybe a little pricey. That being said, normal heaters seem to be pricey too at around the £15 - £20 mark. I'm looking for an eth200 or 300 too. I've been warned to watch out though, as the first batch of these heaters was dodgy. Newer ones are fine apparently though. Just a case of making sure you've got a newer one from whoever you buy from.