If you are looking to identify which would be the best kids drum set that you could acquire for your kids then the best way for you to proceed in identifying the best ones would be online. You should be referring to websites that provide reviews and buying guides about kids drum sets as they would have appropriate lists for you on top rated kids drum sets which you could consider going for without regretting your decision later.
If you refer to multiple websites that provide such reviews then you would realise that everyone would have their own variety to recommend. In most cases, you would be finding at least a few models that would be recommended by all websites that you refer to for recommendations which means these would be some of the best that you could purchase for your kids.
Drum sets are normally designed for different age groups so you will want to identify the age group that would be appropriate for your kids before going and purchasing the best kids drum set which can easily be done online as well as on the high street, from specialist as well as general stores that may have stocks of kids drum sets. You can get better variety and prices online though it's your call how you do your shopping for these things.