What should be between these two boats?

I'm lvl 55 and go there by using the M Project, I paid off my CA and I think it should not
cost more maintenance:

The M Proyect have repair free, and of munitions, scouts, etc the cost from it is about
from 300 credits, The Ad. Hipper Haven't repair free and the cost of munitions, etc is
about from 500 c.

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Admiral Hipper:
Wining a battle i win about of 2500 credit, but win about of 1500 credit for costs.
Losing a battle i win about of 500 credit, but lose about of 300 credit for cost.

M Proyect:
Wining a Battle i win about of 1800 credit, but win about of 1500 credit for costs.
Losing a Battle i win about of 500 or 400 credit, but win 100 or 200 credit for costs.
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I prefer in my case the m proyect because i lose much. The Admiral Hipper always I end
losing money.
And do you think about it ships?