I have made Jalie jeans at least a dozen times and I love the pattern. I have also made the StyleArc Sandra jeans a couple of times--I made the legs a bit slimmer than the pattern and used a very stretchy denim for snug jeans--I found the waistband to be way too big for me, but the fit is nice. I made the Jilly jeans as well. The big difference with the two companies is the range of sizes--Jalie has every size in one pattern whereas SA has only one size which makes modifying the size in different parts of the pattern slightly more difficult. SA has less of a difference between the waist and hip measurements, in my experience. The legs are a bit narrower in SA than in Jalie. Also the fly extensions are a separate piece rather than cut on. I pin the extensions and front pattern pieces together so I don't have to sew them on separately and then I follow the Jalie directions. Another difference is that SA has slightly deeper cut pocket openings on the fronts and a 5th (watch) pocket on the right front. All three patterns are excellent and give RTW results. Here are links to my reviews of the three patterns:
Isn't it funny how one thing leads to another. I'm buying the Jalie pattern here right now! Glad I found this. Oh and excellent tutorial on the jeans fly from http://stitchesandseams.blogspot.com.au/2001/04/techniques-jeans-fly.html
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