Arc Arc 7 and usb port issue

Hi all! I am looking for a cheap tablet for my son and I am between the Kobo Arc 7 and the Nook Tablet. I can get a refurbished Arc here in Canada but I have read some have issues with the charging port. Do you know if this was resolved because it looks like it was older models but I am not sure as I don't know when they stopped manufacturing them.

It would save me a tiny bit to buy the Arc and he could get it sooner, but not much of a warranty. Where the Nook has a year warranty I believe.