I have used
this product for years and found it to be great, far less mither than other waxing methods with pots, spatulas etc this was far better.
Last year a friend let me try her little epilator and I then bought one and have been using that ever since, just for the convenience of being able to remove hair a bit at a time whenever I have a spare few minutes, rather than setting up for a long waxing session.
Results aren't quite as good as waxing, but on balance the sheer convenience of the epilator wins out.
Pain wise ..... your own mileage may vary over time! I used to be able to epilate my arms and it just felt like mild pins and needles - I used to wonder what all the fuss was about.
However, these days even though the hair is very fine now due to HRT and previous epilation, it's so painful that I can barely stand to do it there at all!