I made a change a couple of years ago...got tired of the huge tax burden and then still have to pay more at tax time...now, I get a nice refund, no reason to get pissed off at this wonderful spring time of the year! Besides, I just cruised with my refund!
I just did my state and federal online (both free) in about 20 minutes.
Ended up owing (as usual), and had them deduct from my checking.
Pretty simple, without the hassle of the post office