Suggestions Eco-solvent inks

Switching over my Roland Sol Jet 2 from solvent to Eco solvent. ( or is it possible and even worth considering to go Latex with the dx4 printhead )
Do the Roland brands really help your print heads last longer?
Which brands should I strongly consider & which ones should I definitely steer away from? What's the best Bang for my buck?

 

This is an SJ540 that was converted from a dye sub machine to solvent. Never had eco solvent inks in it. At least it seems the ink changeover is going to be relatively simple.

 

I need to change all the cap tops and planned to replace the ink lines (since i have an ink drop anyway). I have new bulk ink cartridges to put in also. Any tips would be helpful too.
I may need a new printhead or 2 unless someone can tell me how i should soak these.