1. Buy 1 x 6095 (wide flow stream) 9500 l/hr flow
2. Buy 1 x 6105 Stream 13000 l/hr flow
As far as comparing them to MP 40's, IMO there is no comparison because the MP 40 cannot be moved around to eliminate detritus, the TUNZE pumps can be placed anywhere and pointed in any direction, so that you have maximum flow over all areas in the aquarium.
If and when you need additional flow, you can buy another pump. Both of these pumps can be controlled by either a 7092 or 7096 Multi -Controller, but they can work just as well without a controller.
If you need an estimate just email me and I will send firstname.lastname@example.org