Best brand battery for small UPS?

I have a Belkin UPS that came with the modem I got about 5 years ago and today the battery failure alarm went off and sure enough the battery was swelled and looked like it was about to blow up lol.

Looking on Amazon there are about 90000000000000 Chinese replacement batteries I can buy but I was wondering which brand was the best one?

I was looking at the PowerSonic battery (blue/grey color), are they good?

How about replace with exact same if available?

Buy a new UPS.

I'd see if Batteries Plus or similar have any compatible generics. Then you still get a discount on the units but actually get a reputable seller.