I moved from the Advanced Random Posts Widget (also by Satrya) and I continue to be a happy camper. I sometimes wonder what drives developers to create such excellent plugins and widgets and then not charge me for them. Believe me I really appreciate their help.
I installed this, it worked with no hassles and it has become my friend. I will add the thumbnail thing when I figure that out.
My first site using this widget is [ link redacted, please do not post links in the reviews section ] and there will be others!