I bought a Philips one off a recommendation here, but it's useless! It seems to break the hairs it catches rather than epilate and only catches around 50%. It has a curve to make it ergonomic but that means it only works on the parts of your body that has the same curve and the hairs lie in the right direction e.g. for underarms there's no contact, for thighs there's contact but the hairs are crossways to the epilator so don't get picked up.
Wondering if it's worth seeing if I can get one in the sales or if they all have the same issues.