I'm sure there are "more powerful" devices available but as far as safely removing pills from fabric, this little guy does the trick. I have never made a hole in any piece of fabric with this, and I rarely use it with the fabric laying flat as is suggested.
One should keep in mind that with any fabric shaver you are basically using fast-spinning razor blades behind a shield to cut the pills off, so if you use too much pressure and actual fabric gets into one of the holes IT WILL CUT IT. That said, with a little patience and a gentle hand, THIS THING ROCKS!
I have had mine for so long I can't even remember where I got it and while the blades seem to be getting a little dull, it does still remove the majority of pills from clothing.
On the battery life, I have never thought it to be a "battery hog" as some are saying - but maybe they've changed things in the last few years and the more recent battery claims are true. Perhaps this is why some are having issues with the collection container falling off, too - mine never has...
All in all, I have to give this item high praise, and you can't beat the price, either!