i would ditch both (widgetz or anything with a Z sounds a bit scriptkiddieish imo) and would buy something like bestbluewidgets.com or freebluewidgets.com fwiw…
people like to type “best X” and “free X” in to google etc a LOT, so you will get lots of organic search value as well as the SEO value associated with a self-seo’ing domainname.
my $.10c