Hi there,
We have great experience on X cart,please find the samples attached however at the same time we would suggest using the latest and best suited technology for any ecommerce based solution which is Magento.
The end result via a website based on Magento are far better than using any other technology this fact can also be confirmed using google.
Though we are proficient with X cart as well if you are not flexible with technology.
Kindly do feel free to discuss this in detail with us.
best Regards,
Team BIF