there are times you need the vigorous wash action of low water levels with the high speed agitation....
to really scrub some stains......
this has worked for me many times....either hot water and bleach......or a heavy dose of detergent and color safe bleach.....either one, great for things like socks or cleaning cloths....
the Electronic models wont allow high speed agitation with lower water levels...it defaults to low or medium....
pros and cons for things like that....