I just bought a Henkelman Boxer 35 from vacuum-packer.com and also found Trey Rios to be very knowledgable and accomodating. It seems as though Henkelman is the best in regards to tabletop chamber vacuum quality, and they are certainly the technological leaders in the field. I had mine configured with Soft Air, Gas Flush, and the H20 sensor so vacuum stops as soon as boiling is detected. I was going to get the seal bar with two 3.5mm seal wires, but based on another post from someone with a Boxer 42, I got the bar with one 3.5mm seal wire and one 1mm cut off wire. Cutting off the food splattered excess from the bag is nice for keeping the freezer and Sous Vide vessel clean. The end where the excess is cut off acts as a second, albeit narrower, seal. Just to be safe regarding the second seal, I also ordered the "1-2 Cut" option, which allows you to program different times for the 3.5mm seal wire and 1mm cut off wire, instead of both having to heat for the same amount of time. This gives me the control to ensure the cut off wire makes an effective seal. This forum was invaluable in helping me make my choice.