This Beko did replace an exhausted 10+ year old condenser tumble dryer, so I guess it depends what you're comparing to, but we've been absolutely delighted with it so far. I also had some concerns regarding reports of extended drying times with heat pump dryers, and wondered if we really needed to spend a lot more £. However, it's been brilliant so far, drying everything in the same or less time than our previous dryer, and doing so whilst making a LOT less noise.
It was easy to install, has a good selection of programmes and useful options, and is easy to maintain. For us, the main draw of this Beko was its less than standard depth (at only 548mm), which has allowed us to push it back further under the work surface, the under depth of which is slightly restricted by pipework.
I can't comment on any reduction in electricity usage yet, but it's at least making us feel a little better given the hammer it gets on a daily basis supporting family life!