The new RoboBrew Gen 3 is out, and it has a lot of RoboBrew owners upgrading. Whether to upgrade depends on which RoboBrew you currently own, and what you want to get out of brewing.
To speed up the time between your mash and boil, you should set your boil temperature as soon as you lift your malt pipe. While you add sparge water and allow the malt pipe to drain, seal the gaps to help prevent heat losses and make this process a little bit faster.
I chose the RoboBrew as a very cost effective alternative to the Speidel Braumeister with its built-in pump. So when I started brewing with the RoboBrew, re-circulation was a must.