Retail web design/e-commerce supplier | Supplier Selection

It has been suggested that Magento may be suitable to use to keep costs ‘reasonable’.

So far I have found that most suppliers have limited experience with Magento and also demonstrable and relevant retail e-commerce experience that can confidently link in epos, inventory mangement, financial reporting from seperate suppliers.

I would be interested to hear others views of Magento or whether a bespoke soution is more effective and from any experienced retail web design/e-commerce/seo suppliers.

Many suggest that this is a huge burden on server, so go with Os-commerce but looking at its features validating it once again.

Many thanks