Does having different domains linking to www.****.com/prouduct1 ect.. have any effect?
Should I keep keywords at main index to a minimum and only use main targeted keywords to the main index? Then use more generic, product specific keywords at the www.****.com/product1 etc.. pages?
IMHO,when branding is a consideration one is better off keeping one site. Title and do your home page copy keying on one or two phrases. Then give each product its own page keying on its keyord/phrase. At this time the SEs look at each individual page. Going the route of sep sites for each product can be hazzardous.