Personally, I would drop SavvyShopper. .US has a long way to go before "brandable" names start selling in that extension consistently. Even then, I would think that one is a long shot.
FIXPC.us is probably worth renewing, being that it's short and it's a descriptive, keyword based name. FixPCs.us would obviously be better, however, but all of the major extensions are also taken in "FIXPC".
Good Luck