General First time Android buyer - Rooting question.

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http://androidforums.com – I'm a first time Smartphone buyer and looking at our purchasing the Note 2, but have a few questions before I do so.... If I root the Note 2 and/or put a custom ROM on it, will I lose the S-Pen capabilities? If so, am I able to get those features back? Also, have you guys rooted note 2? Do you advise for or against it? I really enjoy using the S-Pen, especially as a substitute for my finger, and just hoping I can retain those capabilities if install a custom ROM. Additionally, the Note 3, is it expected to be announced around the time of MWC or later in the year at IFA? Any Help would be (General)