recommended speaker cables and interconnects

trying to upgrade step by step my stereo system, after not dealing with it for awhile.
right now have 3 kinds of speaker cables.
old audio quest , and an old monster cables.
a bit newer Kimber cable that are too short for my current configuration.
for interconnects, one pair of MIT mi-330
and one pair of Audioquest Ruby 2.
looking to upgrade for moderate price.
can’t give a budget range cause i am not familiar with the prices .