I had the exact same model. Still have it but don't use it because the battery swell making it unusable... (partly my fault because I kept it plugged in all the time which is bad for the battery).Don’t know which spec one you get. I got the 4GB+128GB with LTE one, it performs okay. It runs FULL version of Microsoft Office while I am able to open few tabs on Chrome. So it is not too bad for a less than $150.
I admit that it is slow as hell when Windows doing some updates. And Windows update is kind annoying.
I don’t use it on lap, when I am on the go I use touch screen. It isn’t best, but it is doable.
At $150 it's fine. I got a Surface go 2 (128GB SSD, not emmc, and 8GB RAM) with LTE and M3 for $240 (open box, one year warranty) last month, plus a keyboard for $50 separately. I still had a magnetic pen from my now dead surface pro.
I consider this a great deal, it's a much faster device than the surface 3, not even close, feels like a regular laptop.
It could replace my 10.5in iPad pro as pen an paper for my business in the future when the iPad battery degrades too much...
I added a 512GB microsd too.
The additional benefits of Windows are welcome and the speed tradeoff is not too bad.
I think the bottleneck of the surface 3 was the emmc more than it's atom CPU, with a proper SSD it could have been a more pleasant device.