Looks like everyone else has you covered. Vaping is much cheaper than cigarettes overall, and can be even cheaper when you build your own coils and make your own juice. If you're first starting vaping, I'd recommend getting one with replaceable coils while you learn how to rebuild. For JUST getting off of cigarettes, I usually recommend an
Aerotank (for ego type batteries) or a
Nautilus , since they allow a similar Mouth to lung similar to your CE5. The difference, is the coil is at the bottom instead of the top and it has a glass instead of plastic tank. I started with the
CE5's like you did, and oddly enough, that's where I started rebuilding. I would take some silica, and some 32 gauge kanthal and take the coil heads apart, rewick and recoil, and continue vaping. That's where I learned the absolute basics.
A rebuildable atomizer is better setup for rebuilding though, Stick with what works for you, but once you have a good setup going, try looking into a rebuildable atomizer for learning purposes. The
Kayfun V5 (or clone) is a good starter, since it offers a tighter air flow. It's not recommended for subohms though, since sub ohming requires more airflow. Think of it as a rebuildable version of your CE5 or the Nautilus.
For subohming, there is a wider variety of tanks, and many of those are good choices for one reason or another. A good standard design, is the
Kanger Subtank. Although not the best at anything, it is good at just about everything. it offers a 1.2 ohm coil as well as a .5 ohm coil, and a rebuildable deck as well. It's a good starter to learn about building, since you can buy a coil if your rebuilding doesn't go very well.
My personal favorite tank at the moment is a rebuildable called the
Griffin. It's more for the heavy subohm vaping and has a very airy draw.
As far as systems, I don't even know where to begin.. so many good options.
The Releaux is a heavy mod taking three batteries. my RX200 has been a solid performer.
The Cuboid is my preferred two battery device. It being small for two batteries and easy menus makes it a good solid mod.
For single battery mods, I like the Guardian III E-pipe for the aesthetics. It's been performing solidly, but the plastic worries me.
I am currently looking at the Eleaf Aster as another single battery mod. It seems to push all my buttons as far as options go. I can't officially recommend it, since I haven't tried it yet, but it looks promising.