So, I thought it was okay at first the 3 days left did not tick over to 30 until the day ticked over.  But, that still leaves it at 3 days lost of the previous preferred player.  Normally i would just let it run out then have a day or few without, but this time I decided to test it a little and see what happens when I buy a new month of it before the previous month was over as well as a different tier.

Ah, yeah that seems right, I don't know exactly how many days I got but I don't think it was more than 30.  I'm not too worried about it though, I was mostly just trying to get a higher tier and didn't want to wait.  I was calculating the effectiveness of the point and xp bonuses to see exactly what tier would be better for what I want.  I came to the conclusion that while the top tier is obviously more of both, I think the xp increase was notably more, and the point increase was not ideal.  Basically if you want the best value for points and care about the cost then the basic is best but if it's xp your going for then the top tier is best, but either way if you don't care too much about money then the top tier still has the best value.