Newtone strings can hand wind you a slightly higher tension string which would mean you can have it in Drop D tuning with whatever gauge you like, and still have the same action and impact as standard tuning, although they'd feel a bit tight if you tuned back up to standard again.
(do you mean just Drop D, or Drop D Standard, so DADG or DGCF?)?
I use Newtones exclusively for standard tuning, and also a high tension set for Drop C standard.
And the price, about the same as a set of Elites....delivered, nice
Si
p.s.
most think that increased tension is caused by thicker gauge strings, thats true to a small degree, but the majority of tension is controlled by the core of the string. Newtone can increas the size of the core to suit your tuning, potentially allowing you to use thin gauges for low tunings if you don't want fat strings.