Just to clarify...my desktop had virtually the same speeds....but...it didn't reflect the same slow Youtube issues. The rep had me move my notebook ten feet away from the modem/router....and then..the notebook did NOT have the Youtube issues.  

When I walked back the 35 feet or so to the notebook's normal location.....the issues were right back. He then had me turn off and turn on the router...and then he went and did something, or checked somethng, on his end. At that point, the notebook was responding as well as the desktop???? I thought all was solved.....until today.

Now, I don't who or/what to believe, since the notebook seemed "fixed" yesterday...and then today,, it was mostly back as slow as it was.  I kind of wondered if he pushed my speed up temporarily just to make it appear that the problem was on my end????  Who knows?

I have NO PROBLEM spending the $100.00 to get the device that you listed.....but...why the heck wouldn't he have offered it?  He did say that a "booster" might be in my future...so...maybe that is the solution...I presume that device is the "booster" that he had in mind, without naming it.

Let me ask about one more thing that may explain a lot....my desktop has 4 gb RAM...my notebook only has 2 gb RAM.  Could that be the slow-down and difference in their abilities?  I guess I could add RAM..or I could add the "booster" but I'd rather do the one that was more likely to solve the problem.   Thank you again for your assistance.   Rich