If you can try a Dolce and also the Ruby I would ride both to compare for smoothness. I believe fit will be the same with the two. However, I also believe models between the two like, comp, pro, expert for example will make for a different ride.
Hope this did not sound too confusing.
~ JoAnn
but if your budget is really $700.... don't try the ruby! lol! as much as i liked my dolce... the difference in ride to me... IMO... is truly night and day...