Sewage Ejection Systems..recomendations?

I'm adding a full bathroom in the basement and have been looking at sewage ejection systems. Headroom is a concern, so I am going to trough the concrete floor to run the drain from the tub to maximize usable space. I've looked at the macerating toilets by Saniflo and a Saniplus was used when we did the bathroom in my sister's basement.

I've decided to go with a pit system for this project, but have not dealt with one before. Any experience or recommendations on which one to use? Little Giant, Liberty, Zoeller, others?

Thanks,

Al