I had to try. I mean, toothbrushes are really expensive, and actually you really *should* change them every six months, they do start to fall apart. I find mine almost unusable after a year, but the brand name ones are a chunk of change relative to the off brand. Anything under a pound has to be investigated - at least I wasn't wasting much money trying. However, let my own waste of money be a guide to you - they are *hopeless.* Despite having some of the basic technology that makes toothbrushes useful, they did only a very minimal amount to clean my teeth. Better than the old flat strange ones, and better than fingers, and thats is about all the good I can say.
Cost 1-10 with ten the most expensive: 1
Value for money 1-10 with ten being the best: 2 (It doesn't fall apart immediately, so if your choice is fingers...)
Durability 1-10 with ten being the most: 5 (To be fair I haven't tested it properly, due to lack of usefulness)
Usefulness 1-10 with ten being the most: 2
Importance 1-10 with 10 being the most: 9 (But get a real version! Its just toothbrushes that are important!)
Smile Factor 1-10 with ten being the most: 1
Cool Factor: 1-10 with ten being the most: 1
*Do I think its the best in its field: NO
*Could I live without it: YES
*Target gender, age range, and possible further demographic targets : Adults, Male, Female, Money savers
Disclaimer: No financial interest in this company and no-one else asked me to do this review.