If you are looking to save costs, then you don't need to get the Surface, there are plenty of other Windows devices at a lower cost than Surface.
Since you have a desktop for anything that requires the computing power, it could be enough for you to just get a simple Windows tablet with an Atom inside instead of a full on i CPU.
One device I recommend is Dell Venue 11 Pro 5130.
Even though it is not as powerful as a Surface Pro 4, it is still powerful enough for a basic office suite work, as well as Web browing and media consumption. Also, since the Atom processor sips electricity compared to i processors found in Surface tablets, it would have an awesome battery life.
However, if you do need the power of a Surface Pro 4, then it will be good for you. You just need to know what you are going to use it for.
Posted via the Windows Central App for BlackBerry 10
10-20-2015 01:24 AM