Hey , I have always genuinely want to use Nop Commerce - but Magento has served us well - and I hate php ( it's like going back to the ASP days ) . I'm not here to promote anything - I've spent tens of thousands of dollars on upgrading magento and I've just about had enough.
I guess the things that really add value for Magento are
1) The ultimate search plugin - which gives you auto complete and popup very fast searching based on sphinx , in the popup it shows lists of categories , products ( with images ) and articles ; highly configurable.
2) Advanced SEO plugin , allowing you have products in multiple categories but choose one as the URL ( e.g. www.mystore.com/category/product/ ) - which is more effective than canonical URL's & has configurable robots meta with regex matching patterns - very powerful.
3) Themes in general - with Nopcommerce don't seem to be quite "there" - take for example http://magento1.emthemes.com/everything/index.php/?___store=marketdeal_eng or all of those themes here http://preview.themeforest.net/item/magento-21-themes-magento-19-all-40-creative-designs-multipurpose-responsive-everything/full_screen_preview/12243332 - they seem a lot more "polished" with menu performance , layouts & design. Nop Commerce themes are "sort of in the right direction" - but the feel of them is just not the same.
I'm just trying to communicate my frustration - I'm not wanting to start an argument with people already sold on Nop commerce. What would be really great is if you said - yeah , hey it needs a few improvements - lets do it. :-)