Depends on what you are looking for. Sliders are nice in that they have larger keyboards and screens but the downside is that you have to slide out the keyboard in order to use it.
Candybar keyboards are always on hand. If you prefer the candybar form factor then the Unihertz Titan and Titan Pocket are currently the best options.
And android 11! Feels like a winner to me. Crazy that it's $300 (assuming we're both talking about the Titan Pocket). Feels like a potential winner to me.
The Titan Pocket is pretty great, just make sure you understand how small the screen is compared to what you may be used to. It works well enough for many use cases but it's basically unusable for most modern games. Which can be a worthwhile trade-off depending on what you are looking for.