I have an older BabyLock Imagine and haven't used it since around 2008. When I first got it I used it quite a bit but got out of the habit when I returned to sewing after a three year hiatus. I think the seam/overlock on my Viking #1 does a quality job on the seams even though it's slow going. I don't find it necessary to trim very often because I mostly use Style Arc with their 1/4" or 3/8" seam allowances.
That being said I am planning to get the Imagine up and running one of these days because I'll be doing some production sewing of workout clothes and it sure is faster! I did try to use it last year one time and the stitch quality was off so it may need service and/or some tweaking.