need help to chose

hello

i am looking to buy soonish a smart ring at the moment i have 3 i would chose from

• uh ring aiir
• ringcon gen 2
• galaxy ring

for sizing i bought the uh ring size kit and i hope it is comparable to all rings.. i am on android and have a samsung phone.. i will mostly use it to sleep tracking and for health tracking

which one should i chose and suggestions? i will buy from amazon.