I would strongly suggest this thread (A Mackie Onyx 1220i)
Thread link
Its on Par with the RME, and will do all you need..
However..
The RME is better than the Moto in terms of I/O and driver support. (working with DAWS etc)
But the Moto has a better AD/DA converter, and less noise floor in general.
Its hard between these too, - as the RME has better Mic Pre's - but the Moto Better conversion.. in other words.. you get better input from the RME, but Better Output from the Moto.. - depends what you want it for, and your prefer choice

Although I'd still go via a mixer looking at your alternative options/Equipment.
And the Mackie is up there with your current choices.