Product review (2 stars): Samsung WF448AAW washing machine headed to the town dump!  Buyer Beware!  =(
I purchased a Samsung WF448W washing machine in 5/1/2010 from Best Buy, but I want to put my experience with this Samsung washer out there where it will be found.  Let me say, I loved this machine when it worked and for 5 years the machine performed has performed very well.  However, on 6/8/2015, just as the machine passed it's 5th year in our home, the machine would not complete the spin cycle.  I contacted several appliance repair services and none would even come out to look at the machine.  I contacted Samsung customer support to find a certified service partner in my area and contacted the first service provider Samsung recommended.  On 6/11/2015, the service tech explained that the support arm in these machines is corroded away and broken - per my my service ticket "Found defective spinner advised customer to contact Samsung for possible coverage".  So this explained the very small, greyish rocks I kept finding in the washer's filter!  Anyway, the repair estimate (parts & labor) was $800 - $1000.  And he's seen 40 of these already this year.  Ouch!  So... I contacted Samsung to see if there might be any additional coverage for this corrosion issue - because I hate the idea of throwing this otherwise perfectly good machine away over this defective part  - but I was told there is nothing Samsung can do to help with this issue.  According to the ECR (Executive Customer Support) representative, the extended warranty (called Samsung Protection Plus) does not even cover the drum or the spinner.  WOW!  So, buyer be sure to read your warranty and take time to check out these updated reviews.  My Samsung was a $1000 machine only 5 years ago, and now it's headed to the scrap yard.

For more information:
1. Search for "galvanic corrosion washing machine drum - this issue may not be isolated to Samsung only.
2. If you need more info specific to Samsung, check out the following video - this is exactly what happened to me washer: https://www.youtube.com/watch?v=crhk3KkeQi8.  Here is a thread with photos on partsdr.com: http://forum.partsdr.com/showthread.php?1234-samsung-silvercare-washer-very-odd-item-found-in-drain-pump-is-it-from-the-washer.

Overall, I am very disappointed in the Samsung washer.  Not sure if Samsung has any remedy for this "corrosion issue" on the newer machines or not.  I'll give the machine two stars because I liked the machine for 5 years.  Still, I can't recommend a machine that has an effective life of on 5 - 6 years.