For the new Darwinians, vaping watts gives you many more settings to fine tune your juices. It also gives you the chance to compare the different ranges of attys to see if you notice and/or prefer any of the differences between LR attys/cartos, standard attys/cartos and HV attys/cartos.
To compare the different ohms ranges, I suggest you do comparisons with the different ohms levels of the same model attys. So, for example, if you like 510 attys - try 510 LR, 510 Standard and 510 HV all using the same juice and experiment at different watts levels. If you prefer 801 attys, try comparing LR, Standard and HV all in 801. You can do the same for any model but as each model has its own personality in terms of Vapor, TH, flavor, etc., sticking within a single model (and same juice) gives you the opportunity to really do side-by-side comparisons to see which ohms level give you the vape you like best.
Juices can really come alive when you start experimenting with different watts levels. At the last vape meet I went to, one person was vaping Caramel Popcorn in a 3 ohms carto on 6V unregulated device. He put his carto on my Darwin at a lower watts setting and was surprised that he could suddenly taste the popcorn flavor in the juice. Different flavors in the juices can each respond differently at different heat levels. Because power (watts) in vaping expresses as heat, try your favorite juices at different watts levels and see what happens. It is really just like cooking: not enough heat and flavors do not come out, too much heat and flavors get over-cooked or cooked out, just the right amount of heat and flavors can really come alive.
Some people find they have different settings for different juices, other people find their watts sweet spot and just stay there. But, Darwin's watts settings give us many more settings to fine-tune our vaping experiences than variable volts and/or other devices.
I wrote out the explanation of how and why Watts has more fine-tune settings compared to variable voltage in a post earlier in this thread. This is a long thread and some of you may not have seen it back over 80 pages ago so here is a direct link (for anyone who may be interested):
http://www.e-cigarette-forum.com/forum/nhaler/151096-darwin-evolv-421.html#post3099718
Happy
