After three internet designers failed, the guys at Softpulse Infotech were finally able to setup my store according to our demanding requirements.
They know very well how shopify works and are experienced programmers, able to design features that other designers considered impossible to do on Shopify.
The most complex page was the product page, which required extensive use of apps and high programming skills.
Apparently they are very sought-after and work simultaneously on many project. Anyway, if you have a little patience and are not afraid of iterations, your website will look exactly as you imagined, precise to the pixel. On their side, they are patient and willing to iterate until your expectations. It just required some time to get there.
If your design is complex, make sure that they review carefully your requirements and know from the start which tools, apps and code they need to meet them.