128GB enough space for following needs?[bootcamp]

128GB is definitely doable for your usage. However, over time just with both OS and app updates. That'll eat up additional space.

The good thing with the 2015 is at least there are 3rd party hard drive upgrades available should you run out of space in the future.

 

I had Windows 10 installed alongside Yosemite and El Cap for a while on my 128Gb 2014 MBP. Never had any space problems. I only had basic apps installed like Pages/Numbers/A couple Jetbrains IDEs on Mac side and Office and Visual Studio on Windows. Both partitions were about half full. I kept large files like my photo library on an external drive.

So I'm guessing you'll be just fine.

 

Refurbished is same as new. It's simply one that was previously sold, but returned. A return/refurbish does NOT imply that there was a fault of any kind - repaired or not.
Sometimes a new unit gets returned because the wife didn't like the color or the keyboard, and not a defect at all.
Nonetheless, the refurbish process means an extended checkout and inspection, with faults fixed, prior to release as a refurbished unit. An Apple refurb is assigned a different serial number.
Warranty (and entry into the extended AppleCare) is exactly the same as a "new" system.
And, sometimes that all means that a refurbished unit can be in better condition (and a better purchase) than your "new" system.

 

I'm not too familiar with their refurbished items. If it's Apple certified where it has the one year warranty and ability to add Apple Care. I'd probably get the 256gb.

I like new as well. With a warranty though they are equal in my opinion

 

Lots of fans of refurbs here, but I feel you on preference of buying new. Not going to debate that one. On the drive size, if you think it's questionable at the current size you're considering, go up a size. I don't know how long you've been on computers, but you always end up using more space than you initially hope you will. Like mentioned above, stupid things like updates alone start adding up. If you suddenly feel you need to use some app you weren't anticipating, boom, space gone. I got more space than I needed, but just saving off temporary files (like media for a trip or pics/video for editing) and the space goes quick. You're paying for some added flexibility. The space is at a minimum peace of mind, at best it's space you're going to use and the flexibility to delay an upgrade. If you are really disciplined about managing your files and space, you could get by. But I never heard anyone regretting getting too big of a hard drive. YMMV.

 

AppleCare should apply equally to the refurb.