Flat tips without a doubt!
When I first started I opted for round ones, and ended up cherishing the very few whistle tips I had. Lost them all over time, and just got a few more with some replacement atomisers I just received for my 510s.
The round ones were what I ended up with early-on, I ordered 6 boxes of empty carts when I started, and that is what they sent.
I HATE them!! Leaky (juice AND draw around the lips), and they are very abrasive on the lip area. Nothing bothers me more about vaping than the tender lips from the round carts.
The flat ones are easy to hold in your teeth too.
I am waiting for 30 pcs. of 901 whistle tips to show up from Ruyandirect. I hope that they work like I expect due to the recommendations I have found on the forum.
When I first started I opted for round ones, and ended up cherishing the very few whistle tips I had. Lost them all over time, and just got a few more with some replacement atomisers I just received for my 510s.
The round ones were what I ended up with early-on, I ordered 6 boxes of empty carts when I started, and that is what they sent.
I HATE them!! Leaky (juice AND draw around the lips), and they are very abrasive on the lip area. Nothing bothers me more about vaping than the tender lips from the round carts.
The flat ones are easy to hold in your teeth too.
I am waiting for 30 pcs. of 901 whistle tips to show up from Ruyandirect. I hope that they work like I expect due to the recommendations I have found on the forum.