Hi Mariano, and thanks for your support and comments.

To accomplish that "featured products to frontpage" on the last v05 and v051 I provided that both blocks works on the catalog configuration page but also now they also are two available blocks on drupal's own blocks page. Here you could activate those blocks and restrict them to appear on the pages you wish, for example on the front page, without any need to views.

Another question is what does each block represents, on that case "cheapest products" and "best sellers" which maybe are not your requirements. I'm thinking on an easy way to allow to select different kind of selections on each block to satisfy site's admin needs. Meanwhile I find a solution the only way is adapting the code of two blocks selects to your needs...