Over my more than 6 decades of fish keeping, I have had tanks with substrate and live plants, tanks with substrate and artificial plants, and one tank with a bare bottom. There are advantages and disadvantages to each. Having substrate and live plants is more natural and the plants and animals tend to balance each other just as they do in the outside world.
Substrate provides a large surface area for
beneficial bacteria and a habitat for small critters.
With a bare bottom tank, YOU are the one who will have to keep the tank clean and in balance.
The problem with a 10 gallon tank is that about the largest filter that can be used is an
HOB filter rated for a 5-20 gallon tank and a flow rate of 100 gph. With anything larger, the flow rate will be excessive for the inhabitants. I would suggest having both a 100 gph HOB filter and a
sponge filter in each tank if you are going bare bottom. The sponge filters have a huge internal surface area to support the growth of beneficial bacteria, If you have multiple tanks, purchase a larger size
air pump to supply all of the sponge filters.
Make sure that the inlet tube of the HOB filter reaches as close as possible to the bottom of the tank. The base of the sponge filter should be on the bottom. Unfortunately, without plants, it is difficult to hide the filters in the tank.
As for brands of HOB filters, I have had good success with
AquaClear filters, having used them for over forty years. Unfortunately, I cannot say that about other filters. I had one AC 110 filter in service for over 20 years before it failed. I did have to replace sponges and impeller bushings every few years, but it kept running faithfully. Although I have not owned one, I like the looks of the Seachem/Siche
Tidal filters and the Fluval C series filters. They seem to be updates to the original AquaClear design.