The D16, hmmmm. Tried her out in my local music store. I'm currently using the D8 and if had the choice, I'd prefer another D8 to the 16. Knobs are too tiny, screen is too tiny, in general the whole face is just really busy. Sound capability: great, just as the D8 is. I'm not crazy about the last four tracks being doubled up. As for the Roland, the sound is good but I wish the manual wasn't so unfriendly,but then I've found that with most Roland equip. That's why I use Korg. And if you wanna see small screens the VS series has got that department sewn up. But hey...this is just my opinion. Good luck in whatever you choose.
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...L