Here is my experience so far with my CFIV+, I posted this on the CFIV+ thread I started here-
Innokin Coolfire IV Plus 70W iSub Apex Kit!!!!!
I hope this helps!
Well I've used the new CFIV+ for a few days and here are my thoughts and observations.
It's bigger and it fits my hand better. From front to back it's slightly longer and the concave area behind the buttons is slightly thicker. It's still small but the CFIV doesn't fit my hand as well as the new + model.

Sorry about the 2nd pic, it just won't resize?
I got the blue version which is a little lighter than the blue on the MVPs. It is slightly darker than my pic, I just couldn't get it to show up well.

The screen is also bigger on the CFIV+. I was fine with the original but some people's eyes aren't as good as mine and this was wanted by quite a few. The original CFIV is the first pic to be clear.
The CFIV+ actually feels more sturdy than the CFIV. The finish actually feels less slick even though it shouldn't as it's smooth on the + instead of the brushed finish on the CFIV.
The CFIV+ seems to vape smoother than my MVP Pros, the flavor is more even it seems. I don't know why? I've switched back and forth from one vape to the next using the same tank and the difference is just enough to be noticeable. Weird huh?
It charges very fast even though I'm not using a 2amp charger. The light behind the fire button is also brighter than the light on the original CFIV. It almost lasted two days of vaping at my regular 4ml a day.
My only con is the fire button. It is in a place that just doesn't feel natural sometimes, as specially when compared to the CFIV and MVP Pros that I have. It's not a deal breaker but it will take some adjustment.
As far as the Apex tank, well here's my thoughts.
It vapes even lower than my iSub G, 12w instead of 13w with a .5ohm coil. The airflow is very nice and the flavor from my ADV (caramel apple) tastes slightly better. It feels sturdy and it would be damn near impossible to break the Apex.
A few things I don't like. The top fill feature makes it almost to impossible to fill it to the brim like my iSub G. It's nice not having to take it off of the mod to fill it but it's hard to see where to stop. It's capacity is too low but that has been remedied by the new 5ml, the CFIV+ should have come with the new 5ml Apex.
The drip tips keep getting wider but I'm still using the tips off of my Aspire tanks. The tips are just too big in circumference while having the same airflow and inner diameter as my thinner Aspire tips.
Overall I'm very pleased and I'd recommend the CFIV+ and Apex tank combo to others. I can disregard the one or two small dislikes as both are beyond solid and work great together. If you guys have any questions I'll try to answer them as soon as I can
