2.6-3.5mm stroke with a 0-2mm suspension designated for lining and packing? Hmmmm, why not just go 4.5mm with a 2mm suspension? Longer stroke for lining and packing would suit many artists much better and no real need for optional cams with that suspension. I dunno maybe this machine performs just differently like the inkjecta, ie: 3mm stroke that packs like a beast and is well capable of lining. I will have to get one in hand before passing judgement, but the stroke length options have me at a worry.