Deelux Kitchens website serves primarily as an online retail "window". It's not an e-commerce site per se but its main aim is generating leads for the retail outlets. With that in mind we had no need for e-commerce solutions like Drupal Commerce or Ubercart and used Webform as our tool for collecting leads.
With Webform being a key part of collecting information, we went for its 4.0 version (at the time of writing in alpha) - the reason being that we display a 'Quote me' form on every 'product' node and Webform 4.0 provides a hidden value to display referring URLs to site admins, enabling them to see which product page the visitor filled in the form on. We enable the webform as a block and then use that block as content type field using Display Suite. The above arrangement requires that the block be shown as 'full node' and 'show all webform pages in block' enabled for referring URLs to work.
Another incredibly useful (and very popular with site admins) feature we added to Webform is Google Analytics integration thanks to the wonderful module Google Analytics Contact Form, Webform, Rules Email ( https://drupal.org/project/contact_google_analytics ), which allows us to e-mail, along with the Webform results, a search string used to find the site. Since this is a lead generation site that will eventually require a sales person to phone the prospect, knowing in advance their main interest helps a great deal.
Drupal was chosen primarily for its SEO strengths however another important consideration with the ease of development of a mobile-friendly website.
The project's primary aim was to re-design the website and move it from Joomla to Drupal. In the process we had to built a site that would be very SEO-friendly and would work well on mobiles and tablets - the mobile side of the re-design was important as over 20% of the site's visitors were accessing it from a tablet or a smartphone.
We built the site using AdaptiveTheme and its responsive design capabilities although we still had to put plenty of work into design having been given 12 target screen resolutions. It is still somewhat a work in progress.