I switched to FiOS in December, 2009, and I was pretty apprehensive, having been a Cablevision customer for many years. I really had no problem with Cablevision’s service, I just thought their pricing was much too high in the face of the new competition (and deals) Verizon was offering. I ended up going with Verizon due to their awesome deal, but now it’s almost a year later and I can’t imagine going back to Optimum. It’ll probably come down to price when the current promo pricing I have with Verizon ends, but if the price was equal then no contest – I’d stick with FiOS.