The fact that it's all mechanical is def a plus for what your doing. It will give you awesome battery life and it's ice that you can use different batts for different voltages. The eGo is 3.3-3.4V, not 3.7V, so even at 3.7V it will give a better vape. At 3.7V you'll get a slightly warmer vape and slightly more TH than an eGo.
I think one of the biggest things you'll like, and I'm surprised no one mentioned it yet, is that you'll be moving to a PV that use non-proprietary batteries. The non-proprietary batteries are a lot cheaper and last longer before they need to be replaced. With an eGo, when your battery dies, you have no choice but to wait for it to recharge. With a SB or similar non-proprietary battery PV, if your battery dies, you can unscrew the top and pop in a fresh battery so your good to go again. That is one thing I think you'll really like. I use an Epower, which is similar to an eGo, but is 3.7V and uses non-proprietary batteries and I love that I can remove the batteries. Epower batts cost $4-5 bucks so for the price of one eGo battery, I can buy 4 Epower batteries, and their small so it's easy to carry a spare with me. As soon as one gets low, I can unscrew the switch and pop in a fresh battery that is ready to go! So I think you'll really like that bc you never have to wait to recharge if you have a few batteries. The SB uses 18650 batteries which are bigger and alittle more expensive than Epower batteries, but their still under $10. Make sure you buy a few and then you can always have one charging while your using another. Then you will never have to worry about not having a charged battery. I think that having that option is hands down one of the nicest parts of going to a SB instead on an eGo.
The only downside of the SB is that it is kinda big. It's not really a problem, but it is pretty big. I don't know if that would bother you or not, but if not than it doesn't really matter. But just keep in mind, it's really not a pocket friendly PV, unless you want it to look like your happy to see everyone!
The only other downside of the SB is that it is alittle pricey. But again, that might not be an issue for you.
So really the only 2 downsides I can think of is that the SB is alittle big and is alittle more expensive. But if neither of them are a problem for you, then I think you'd love it.
If the SB is alittle too expensive for you, maybe check out the Bolt. It's a fairly new PV that is similar to the SB. It's a tough and rugged PV like the SB and is all mechanical like the SB too. It is alittle smaller than the SB size wise, which you might like if you find the SB to be alittle too big. The other big difference is that the Bolt uses a 18500 battery instead of an 18650. The 18500 batts still will last a longgg time before you need a recharge and you can always buy a few like you could do for the SB as well. Also madvapes sells an extender for the Bolt which will allow you to use 18650 batteries. It does make he PV alittle longer, but then allows you to use 18650 batteries or other batteries to then get 6V or 7.4V.
Crystal Clear Vaping sells the Bolt for only $37.50, so it's about half the price of the SB.
I'm by no means trying to tell you to not get a SB, just throwing out another option. And if you buy the extender for the Bolt, it's basically the same thing as the SB, bc you could use all the same batteries and combinations of batteries and it's all mechanical as well. The extender costs about $9, so even with buying the bolt and the extender, it's still a good bit cheaper than the SB.
For either one I would def get a tank. Both have the threading recessed on the PV, so a carto tank looks great on both of them. If you get a 6ml tank or one similar to that size, the tanks about the same diameter as the PV and it looks really nice.
Again, not trying to tell you to not get a SB, bc the SB is a solid PV that gives a great vape, just throwing out another option.
Goodluck with everything!!
