In which case we have a Bosch TWK4P439GB (which is currently reduced to £29 at Euronics) which has served us very well so far, Mum's previous Bosch lasted until someone left a pan on the on switch causing it to boil dry and then fuse.

It's well built although not user serviceable, the contact on the base is more robust than the likes of Russell Hobbs which we've had (and had problems with) previously.

If you have an induction hob a stovetop kettle is pretty much your best option, same cost to boil but literally nothing to go wrong with it (except the whistle I suppose).