I carry the Ti when travelling for work, to filter city water and as a get-home/last ditch cooking option (high natural hazard risk here). It works, but mine requires quite a lot of force to push the top/filter section down. This needs to be done nearly-perfectly vertical, or the water will spill out, which in turn requires a near-perfect flat surface. It really has me wondering how tricky it would be to have this consistently work hassle-free in the outdoors...Looking at getting the UltraPress Titanium. It's a bit heavier, but figured it would save me from packing an additional titanium mug, plus the added bulk that it would take up in the pack. Anyone have experience with the Ti, pros and cons?