I can understand wanting a cigalike, not knowing much about electronic cigarettes. I was at that point too when I started. They will be adequate to get you to quit smoking, but I can almost guarantee that within 2 months you'll want something more powerful, longer lasting, and with more options to put on your battery than a cartomizer.
You already said you didn't like how long the disposables lasted. You'll have the same frustration with any cigarette-sized battery. You can't expect a battery that small to give great performance.
You've already stated that you have limitations on the money to put on a kit. Are you willing to put that money on a cigalike kit that you'll only use for 2 months? Then have to put at least that much down for a mid-level setup again?
Just trying to save you some money from the get go. The cigalike batteries only last 3-4 hours between charges. That means how many batteries will you need to carry to last you till you can get home to recharge them? Because they are so slim, the only juice carriers that will fit are cartomizers. Nothing wrong with those, I use them in my tanks, but going just one step bigger in batteries quadruples your choices.
Below is part of the Smokeless Image product line to show size comparisons between a cigarette, the two sizes of mini-batteries, and the larger ego-equivalents X2 batteries. The X2 batteries will last 6.5 hours, 9 hours, and 13 hours depending on the length chosen.
View attachment 179911
If after explaining this to you and you still want the cigarette size batteries, the Smokeless Image is still the company to check out. At least if you get your starter kit from them, you can still advance up to the larger batteries when the time comes, as all of their gear is intercompatible with each other:
Smokeless Image | Only The Best Electronic Cigarette | Smokeless Image Electronic Cigarettes - The Future is in your hands