What is the best iPad Air 2 case with a built-in keyboard?

Hardware and Accessories

Hello, I need to purchase a case for my Ipad air2 which has a built-in keyboard. I need a keyboard with minimum problems with my IOS device. In other words, I need a keyboard which produces all voiceover commands with ease. Currently, I have a verbatim folding keyboard. It doesn't perform the 3d touch command. Further, the keyboard seems to freeze in in many places, including in saphari. Your advice is highly appreciated.