Damn, are you grinding your own glass now Alan?
And speaking of glass, the glass tube/glass bowl (HI diameter) provides an unbeatable vaping experience. The airflow is tops. I've had mine HI-Top for a few weeks now and I just love it.
Though the old top was more one handed. I guess the radiative heat was more passive, kept below combustion temps, so that the herb only activated when the user started inhaling and convecting. So while the HI is brilliant for solo use, I find it too involved for group settings. It defies the cosmopolitan aesthetic of my parties, so when people are around I just fire up spliffs which burn up all my weed and ravage my lungs.
I'll probably pick up some old-style tubes in my next order from Alan, though I dont know if the HI internals would be too hot to leave a tube in there. Plus, with the floating heatport, I wouldn't want to drop the thing with a tube in it.
I still have my old top in America some place, and I'll have someone ship it to me eventually. But my HI-Top is beautiful and I'd still use it the majority of the time. It would just be nice to have my sturdy old top around.
I could see Alan offering two models, an HI for solo use, and something more similar to the old top for group use. Especially if he works out a safe, easy way to integrate a battery. Something warm and attractive that can be passed around and puffed on with no hassle.
THe thing I most liked about my old top was what it shared in common with cigs/spliffs, ie ease of use, diameter of tube, etc. And while you'd have to pry my HI-Top out of my cold dead hands, I think the cig/spliff comparison is still an important objective in designing a personal vaporizer, as it's un-met by any other manufacturer.