To get back to the present....I am trying my very first .8 coil in my new Zenith. It might not end up being my fav but so far it's working quite well.
I'm also trying a .8 coil in my zenith. The airflow seems a little tighter and I ended up turning up the watts a little bit.
I do like the zlide ok. Just ok. I like the push to fill feature and the ease of cleaning. I honestly don't notice any difference between the airflow on this and the zenith when both are using the .48 3d coil. I guess it would be a good tank if you just wanted a small tank for a stealth set up. It works fine and hasn't flooded or given a dry hit which I'm not surprised since it uses the same coils as the zenith. I would recommend sticking with the zenith if you're happy with it. There's not a lot to gain with the zlide and you lose liquid capacity.