I've had an HCigar Hana, an MVP, three iSticks, an IVP1 and now an IPV3. If I had to recommend a step-up device for someone who isn't looking to rebuild, I'd recommend the iStick over the MVP for
1) size
2) potential power (if you get a Nautilus, for instance, IMO those run better around 12 watts on an iStick [whatever that equates to on the iStick] plus if you do decide to rebuild, you can go down to 1.0 ohm on the iStick)
3) modernity, which may not be an issue for you, but I remember very well the MVP and while it works like a truck, so does the iStick. The iStick is more discreet and has more features.
I had shorting issues with the Hana clone (it wouldn't read an atomizer if it wasn't screwed in a certain way) plus mine needed time to "ramp up" to heat the coil. With the iStick, like the IPVs, power and heat comes almost instantly.
Plus, for the price, you can get two iSticks -- and a new atomizer, to boot.
Just my thoughts! Good luck.