Taxonomy gives opportunity only to categorize content so I only could select values (categories and subcategories) which was not what I needed. I wanted to be able to add free text fields, checkboxes, dropdowns...

I've done it by adding product classes and attaching additional fields to them.
1. I've a product class: Administer › Store administration › Products › Manage classes (this generates new content type)
2. Added fields in Administer › Content management › Content types › Cars

Now I need the following:
1. Provide a tabular view of the products with their attributes
For example:
Manufacturer | Year of production | Fuel type | Year of first registration | Price | Node
Mercedes | 2007 | Diesel | 2008 | $150000 | Link to the node with product

I was thinking to do this by adding a view and attaching it to the catalog category pages. For every product class I would have different view which will be shown depending on the selected product class. Is this good way do accomplish this?

2. Provide a product search based on the attribute values

The user should be able to choose values for each parameter and the search SQL statement will be generated based on the
selected values. For integer field I want to add dropdown with "less than or equal to"(<=), "greater than or equal to"(>=), "equal to" (=). The search should be based on product class selected.

Any help will be appreciated

BR, Jovan