I have had an Optima DIngo and then a Streetmachine ; both virtually identical geometry both heavyish but ok once you get them rolling. I now commute daily on overseat steering Streetmachine with 2 heavy panniers on back/ 50+ miles a week. Its pretty bombproof; comfy seat; front suspension is good for comfort as well and rear suspension as well. Avid 7 bb disk brakes very effective. its good for what I want ; not for speed. The overseat steering makes it ok to wriggle through London rush hour traffic which is what I do. Underseat steering is good for long distance I am told.
any specific questions ask away.