I've had G Pro Wireless and XM1r and both of them are really good. I'm thinking of buying Outset AX soon though. Because even though I'm happy with XM1r I think Outset shaped mouse could suit me better.
edit: oh didn't notice that below 35$ I've also had DeathAdder, but I wasn't a huge fan. Really bulky, but tbh most mice at that price range are like that. Its still decent.