Which pool do you recommend? It's so odd that some calculators show -$10/month for me, and some show $150/profit month.
That's your call based on your requirements and preferences.
If you would like to be paid in BTC, NiceHash is by far the best place to rent your hash. Check their stats. They regularly state the payments that go to sellers of hashrate exceed what you'd get by mining with 100% luck, and in many cases by quite a bit. Just use their internal wallet to keep the fees at 2%. (My sig has a referral for them.) At the moment I have no reason to believe they are fudging their stats. Someone stated here you have to watch them because sometimes they pay less than "100% luck". From what I can tell they don't show that stat for X11 like they do scrypt and sha256.
If you want to play with other coins, Prohashing can pay in you in many different coins. However it's a 5% fee. If you think you can compensate for that fee by playing a coin, that may be best. Someone stated here you have to watch them as well because they have some instability issues.
I think there are a few straight Dash pools as well. However I don't know what they are. Read back through the last few pages of posts to see.
If you have more than one D3, maybe set them to different pools for a few days and compare the results.
M