I guess there's nothing wrong in trying it. Make them give you a guarantee on the speed you will be receiving. Also, if you are currantly getting a discount from the one you are leaving, see if they will granfather the discount in case you want to come back. I got a deal where my provider discounted my bill for subscribing for the tv-internet combo. I moved and needed a new address account and I had to fight to get my discount back. They said they couldn't grandfather the deal after I moved.