The Mihm Vogt Tabeo is a solid entry level oven. It has solid features, high quality components and is a work horse. The thickness of the insulation is slightly more thick than Bob described (The current Tabeo has about 4" of insulation on the door).
Like any piece of equipment, if you use it correctly, it will serve you well.
I do agree with Bob's concerns about ovens with doors, but my concern relates more specifically to chamber dimensions which is one reason it is important to cover your work in this type of oven when equiped with MoSi elements.
The heating elements tend to be positioned much closer to the work, so you need to be vigilant about pre-drying your colored zirc, and covering the sintering tray. Purging ovens with MoSi or MoSi2 elements on regular schedule is important, but more so in units of this type (small chambers).
Overall, MoSi/MoSi2 element will definitely last longer and give you more temperature range than SiC elements. While SiC elements do not contaminate easily (or at all) from zirc liquids and have really nice cooling capabilities, they do not last very long and must be changed frequently (which can get annoyingly expensive). Keep MoSi elements clean and they fire just as well as SiC elements, while giving you more temperature range for high translucent zirconia, and a much longer service life.
Confused? No matter...soon you will have your choice of 4 different TABEO Oven versions:
TABEO-1 (1 X 100mm tray)
TABEO-2 (3 X 120mm Stack-able trays)
All TABEO ovens will now be available with..MoSi or SiC take your PICK!
Available May 2017.
Let me know if you need more information or explanation about the benefits and drawbacks of either type of element.