>>21405271
the biggest problem with pull-through sharpeners is that they remove much more metal compared to whetstones. But, unless you own expensive knives, who cares? it would still take decades to completely ruin a knife (at worst, it just become smaller over time).
Apart from that, they usually do the job. Your knives would never be razor sharp, bur still reasonably sharp enough for almost every kitchen task. And the sharpening literally takes just a few seconds. Just buy a model from a reputable brand and you should be fine.
If you don't mind spending more than $100, you can consider an electric sharpener like pic related, which is a better option.