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With something like this, it is really 100% up to you, as this depends on your personal needs.
In this day and age, technology seems to change every other day, but from what you're saying, it sounds like you've got a well-loved piece of technology that is getting to it's limit. If you've had this in a cabinet or something, it's possible that it may have over heated in the past as well, but that is all situation-based.
If you do choose to upgrade to a new unit, you would get a discount for being an existing customer though, through our Upgrade Program.
Whatever decision you make, I hope you have a wonderful day!!!
Sling Media Moderation Team