Just received my Omni-Glide and the first thing I noticed was the small capacity of the bin.  Yes it works great on hardwood and tile floors but it filled up way too quickly.  With too small dogs this will have to be run each day to stay within capacity limits.  Handle is just a little awkward for smaller and/or arthritic hands and could be a tad longer.  Works great and glad I purchased it but needed a little more thought on the design.