I started with a super basic enjoy pen from a 7-11 and then upgraded to that very Aspire kit you are asking about.
I loved it for about a month and got totally caught up into reading reviews for all these different devices and ended up getting an istick 30W.
My reasoning was the Aspire mod (battery), while allowing you to vary the voltage, doesn't max out very high. I read that a lot of juices taste different/better at higher voltages than that aspire mod puts out and I also like the idea of more vapor and bigger clouds. So I got the stick 30W and was (and am) super happy with it. I also liked the fact that I could try a sub ohm tank with the 30W (as opposed to the 20W -- don't get the 20W if you can possible get the 30W).
I also liked the form factor of the istick more -- the aspire was kinda big and awkward to me.
However -- I did love (and still love) the nautilus mini it came with. It's true that it's a 'mouth to lunch' tank but then (and now) and for now that's my preference.
So if I had to do it all over again knowing what I know now and what I like (totally subjective) I would STRONGLY recommend getting an istick and that same nautilus mini tank. (you can get the tank separately).
That being said I actually really liked that kit and think it's a great deal. It seems to frequently be a pretty reasonably prices combination at B&M when you compare the B&M comparisons to getting that nautilus mini tank separately and a mod and charger, etc.
If that kit is the only thing you can get conveniently you could do MUCH worse.. For me, though, I would recommend an istick 30W and getting the nautilus mini tank separately.
I'd also shop around online and you will see that online pricing is WAY crazy cheaper than buying stuff locally. I got mine at vapenw. No affiliation -- just a happy customer that got my product at a good price and quickly.
When I made my purchase the istick 50W wasn't available... If it was at the time I might have gotten it instead -- but with the nautilus mini you don't need something that powerful and I am fine charging a little more frequently. I prefer the size of the 30W to the 50W -- but the 50W is still really small. There are some reports of the 50W having auto firing issues to research and maybe buy it at a place with a decent return policy if you go that route...
Best of luck! Hope that helped!