The choices are vast. I suggest that you explore ViZi's
comprensive guide to mods. You'll see that ViZi distinguishes among three types of mods:
box mods (a few of which Kent has mentioned),
custom mods (the best know of which is your eGO), and
tube mods (my favorite).
Each category and each mod in it is unique, varying by: price, size, shape, weight, battery used, voltage, mAh, material, button, button position, safety provisions, special features, color, designs, etc. Most are pretty good and it is a matter of personal preference (and budget). See which strike your fancy ... then track down text and video reviews of them.
Don't rush into it. You already have a very good PV. Those batteries probably will last for quite some time. Try to identify what, if anything, is missing for you ... and then identify the device that fills the void. It may even be in the same family, i.e.,
other "custom mods" (or what I call "Fat Batts," since they are not really mods).
It may not even be a different battery that would best meet your needs at this time, but a different
atomizer. You have been using the most popular: the 510. But it is not
everyone's favorite (e.g., I prefer the penstyle). You might fall in love with my long, slender Joye 302 or the tiny Joye 306 (which works with the eGO without adapter) or the convenience of cartomizers (510 or Kr8) or the tried and true 901, etc.
As for the Indulgence: You do realize that the nude models are not included. Right?
[To my eye, two of the sexiest mods today are not yet included in ViZi's database: the
Precious M (the shortest and sleekest 14500-based mod) and the
Tekk (using two 18650 batteries to provide 4000 mAh).]
