the best cig-a-like I have tried yet are the mark10's I have to admit surprisingly they are a good vape however they aren't a true 510 so you can't mix and match carts with it....so far I've been able to refill my same cart with juice for a good 2 months but I only use it occasionally.
as for a charging case unfortunately blu is the only one that did that. I've seen some cheap off brands on fasttech but can't vouch anything on those.
Other than that the next cig-a-like that I'd say I like would be the Greensmoke. You can get a starter kit for the price of shipping and buy an adaptor so you can then use any and all cartomizers with it!
Free Greensmoke Starter Kit, while supplies last for new users only
and then the cheapest e9 to 510 adapter I've found (and use)
E9 to 510 adapter
So for like $5 to $10 you can't beat a complete kit

one battery, one usb charger and some cartomizers and then the adaptor to be able to use any 510 cartomizers or 510 tanks
If and when you decide to move away from the cig-a-likes please feel free to check out my blog here on ECF
New Vapor Starter Kits
if size is the issue
Size Does Matter
For those out there with the "size problem"

Here is something to give a good judgement