I don't own a Inhalater XP.
First difference is price and I personally feel you are getting what you pay for when you compare these two vapes.
The Inhalater's convection attributes allow you to easily pull vapor when you need.
The T-Vape's conduction attributes force you to wait for vapor to be formed before inhalation.
Now owning a T-Vape I know I will never get a Inh, they seem problematic at the moment, well ever since they went XP. I really wanted an Inh too, but with the Grasshopper and PnPro I don't see it worth 200+ dollars in joining a community of gripes and returns.
I feel like I load the smallest loads in the T-Vape out of everyone here. I think my bowls average .07 grams or below. These bowls will not give you the clouds you desire. But will give some nice vapor to milk my J-Hook.
I don't own a long tube so I can't comment on how much it holds, but I doubt you will need to put that much herb in it, the short I feel can hold an easy .2 grams.
I don't think there is a big difference of the oven, they say the long gets hotter, to me this doesn't sound possible as my short tube will have your herb dark brown under 6 minutes. If the long worked better than my short than I would be disappointed by the (long tube's) lack of hits and how quickly it vapes my herb.
I recommend getting a T-Vape from ebay (for the convenience and price not for the long tube factor) You can buy ovens separately here - http://www.squaresmoke.com/index.php/t-vape.html
I posted a couple videos on page 11 and Jam posted a couple videos on page 15
Thx for the reply. Would you say the tvape compares better to the pax? I can't belive ionly heard about this after I bought the inhalater. It's not so bad cuz I like the convection but this one is cheaper. How's the battery life? I think I'm gonna sell my pax and get this. Is there a gong attachment?