You can get as many answers as there are types of devices. Everyone has their favorite and believes their way is the best. As others said it boils done mainly to personal preference.
It is kinda cliche but you do need to try delivery devices for yourself, what works for one person doesn't always work well for others.

I agree with the above comments. Every individual's gear and juice is different from others. Their expectations are different from others. It's fine to ask for opinions on individual products or a category of products to help you decide what to try, or if it might be worth your investment and time, but the only true way to know is if you actually try it out on your gear and juice.
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I use cartotanks exclusively. I'm not one of the few who claim they can taste the polyfill in a carto. A cartotank provides me with very good flavor and a vape that is smooth. I prefer a "cooler" vape, so I use single coil cartomizers of the appropriate ohm rating for the voltages that I use. I use the following SAFE VAPING POWER CHART as a general guide:
Vaping Power Chart 2.0 - Imgur
I use the "laser-drilled" cartos in my tanks. I have tried punching my own cartos with a carto punch tool, and also purchased "tool-punched" cartos, but prefer the former. Tool-punched carto's invariablely deforms the carto out of round, or to an oval shape instead of round. This can make passage through a tank's end caps difficult and cause undue stress upon the fragile o-ring washers that are in these endcaps. Damaged end caps are a reason that tanks leak liquid.
Laser-drilled cartos do not have the above issue, and wick juice perfectly well despite the smaller size holes. They also provide me with an expected level of consistancy carto to carto with no human error involved. I find it useful to have both 1 and 2 holes available. One hole is good for any juice that has 50% or less of vg; two holes work better for any with over 50% vg.


Laser-drilled and tool-punched cartos.
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I highly recommend a tank accessory tool with the following shape. This tool will help protect the o-rings in your tank from sharp edges of the carto during assembly and filling. They also greatly speed up the assembly and filling process. I can assemble/fill a cartotank in under 4 minutes, and refill one in 1 minute using one of these tools.
A PBusardo Review - Slap Yo Mama Multi-Purpose Adapter - Big Daddy Vapor - YouTube
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The is a slight learning curve to using cartotanks, as there is to any juice carrying device. The most common issue with these is flooding the cartomizer, which in all probability is from user error from either assembling the cartotank improperly or not filling the carto or tank properly. Knowlege of an accepted method of filling the carto and tank helps minimize the learning curve.
Cartotanks 101: the basics
Electronic Cigarettes 101: Tank Basics - YouTube
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I used clearomizers months ago when I was using eGo size batteries and before I switched to using mods. I've also used the clearo style tanks. I stopped using the clearos when it melted within minutes of filling it with a polycarbonate-unfriendly juice and quickly began using pyrex cartotanks. I've used the string-wicked clearotanks side by side with the same juice, and found that the cartotank won hands down as far as flavor production.