I have been using the laser slotted Boges from Surevape.com. When they wick like they are suppose to they are great. The long slot shape works better then the laser holes. But, I have noticed my past 2 orders, they are not wicking very well. I went thru 5 duds in a row today. Debating on reordering any more. The ones I have used over the past few months are not lasting very long. I am doing good to get 3
tank refills. The filler is getting rock hard-even refilling with a syringe is difficult. I have been switching a new one every day. Its getting expensive.
I also recently tried some
smok tech 3ohm single coil prepunched with 3 holes from
Pre Punched Replacement tank cartomizers I was really surprised that they vape so well. They are a bit more airy than the Boges. The only thing I don't like is they only make them in the 45mm xl length. I prefer the shorter 35mm ones. But, with my having 5 Boge duds in a row today I am going to place another order for some more of the Smok Tech ones tonight. They run 1.79 each and cheaper if you order more than 25.
As far as punching my own holes, it just didn't work. All the carto punch tools would slightly dent the carto and part of the time prevent them from being inserted into the tank. My dremel worked the best, but my preference is to pay a few extra cents and order them already punched via laser.
Hopefully other carto users will share their recommendations here as well.