Looking to purchase some fans for my 4x8

hurricane Figure 8 fans Has anyone tried these? Any recommendations?

I used them for a bit and still have a bunch on the walls I haven’t gotten around to replacing. Only one or two still rotate. They have been up for about a year and a half.

Now I use the active air side to sides.

You can't go wrong using Can Fans brand fans for exhaust and just using ordinary cheap fans for air circulation.