For internet at home...
your most seamless option is to get it with whoever you get your tv with- if you have Cablevision, get Optimum, if you have Fios TV, get Fios Internet. This is the most common setup.
The fastest internet option (and the best option if you don't watch tv) would be to get Fios Internet, regardless of your tv provider as Fios is normally faster and has more stable speeds.
The cheapest option, besides dialup, which is TOO slow nowadays and blocks your phone line, is to get DSL through Verizon. It is a slower connection, but cheaper than Optimum and Fios.
For internet on the go...
You will have to go through a cell phone carrier. Which cell phone carrier depends on your needs. Are you only using it in the US, or are you using it abroad as well (if you are using it abroad, it will be VERY expensive, though)? Are you staying local in Westchester or travelling? If staying local, where in Westchester?
The fastest internet speeds is something called LTE (4G) that Verizon has and AT&T is starting to rollout. The problem is it stops a little north of 287 and then you are back down to slower speeds (3G).
Verizon is the most stable of all connections and has the fastest LTE, but AT&T has the fastest 3G. If you will be using the service in NYC though, stay away from AT&T... their service can't handle the crowds of the city. Verizon only works in the USA/Canada while AT&T works worldwide.
Of the cheaper two services- T-Mobile and Sprint - T-Mobile has something between 3G and 4G speeds, and works even up into northern westchester, PLUS has some of the cheapest prices, but their coverage is very, very spotty. T-Mobile, like AT&T, works worldwide.
Sprint doesn't have a 4G option yet, and doesn't work worldwide, but their connections are more stable than T-Mobile and usually AT&T.
Just remember, your connection will depend on where you will use the device... if you will use it in the same places often, check the coverage maps to confirm where you will be has a connection. If you are travelling a lot within the US, Verizon in general has the best service around the country. Of course, it is also the most expensive.
Once you decide on that, you can decide on HOW you can connect. You can either get a usb dongle that connects to your laptop and works rather seamlessly, or you can get a separate device, called a mobile hotspot device that you have to carry around separately. While that is not as seamless and has something extra to carry, it works on ALL devices, like an iPad or Kindle, as well as a laptop. A usb dongle only works on your laptop. A mobile hotspot has a battery you have to worry about keeping charged- a USB dongle doesn't.
Last edited by YanksRule; 03-18-2012 at 08:58 AM..