I'm still on my honeymoon with Arizer's newest portable. My fave portable right now.
Heat up time is less than 30 seconds.
A very solid unit that feels nice in my hand with the newer oval shape. A more natural feel. It is fairly large for a portable but that's not important to me.
I've been working on using my standard stem and trying to get as much resin on it before I clean it. I bought some long qtips that are made of wood and are six inches long. The stems feel tight when the unit is cold so heat it up first before inserting your stem.
I give a heat soak of the stem of the Solo for 30 seconds before taking my first draw. I do this with my Solo OG as well. I use a more coarse grind so little bits don't go down through the holes at the bottom of the stem.
As with the original Solo the Solo 2 gives a smooth and flavorful vapor.
I fill the stem almost to the top but leave a little clearance at the top. I give my load a pinky pat. I don't pack necessarily. You need adequate airflow. The draw resistance has improved compared to the Solo OG. If you pack too tight you will have a restricted draw. Also keeping the holes in the bottom of the stem oven clear of any ABV or flowers allows for better airflow. I'm not using a screen.
My temperature is anywhere 375 to 390 degrees. A perfect unit to stair stems temp during a session and gradually increase your temp every few minutes. The temp goes all the way to 428 degrees.
Most of the time but not always I can get 2/ 15 min sessions per load. It depends on the cannabis though.
The standard long stem that comes with the unit is my fave but I love the little bubbler too. I have it pictured above. My standard long stem is smelling pretty potent right now but I'm on a mission to try to get the resin as thick as possible
Arizer did a nice job with the digital temperature screen with all the added features. You can adjust your sessions from 6 to 15 min along with whatever temp you want to vaporize at. Another thing you can adjust the beep when your session has started and ended from high, med, low or silent. There's a count down when turned on from eight to zero then a smiley face pops on the screen. You press the top outer ring on top to start the heating process. I guess you can adjust the start up time when the unit starts to heat up. Right now it's 8 seconds. I haven't figured that out. I need to reread the directions. Other than that the menu seems easy enough to use.
If you have the Solo OG it's a perfectly wonderful vaporizer this just has extra bells and whistles. I think my fave feature is being able to adjust my temp to the exact heat that I want.
Edit
I didn't mention the tank of a battery this unit has. It has 2+ hours of use depending on variations in vaporizing techniques such as draw and temperature.
Nice write up Carol. 
