I found the following review at
http://www.patternreview.com . Might be others there too:
http://sewing.patternreview.com/Sewi.../Review/1/4458
The review mentions that the Babylock Serenade is identical? Might be worth checking out that machine too.
I personally would not buy a Singer; I would pay more and get a Janome. Both machines are likely to last 20 years, but I would prefer 20 years of no problems to 20 years of fiddling with tension, replacing bobbin cases, etc.