I have been using SP for months now. I am very happy with its performance. It's a little heavy compare to rest of today's tablet. I was so happy with Surface Pro tablet and I decided to get Surface Pro 3 i5 8GB/256GB. After little over a week with SP3, I returned it due to few different reasons. As, I am back on SP1. I am realizing how well SP1 is performing. In some case, I feel like SP1 performs better than or at least the same as SP3. With what I am doing, I couldn't tell different in term of performance. I guess, if you don't need the larger screen and you are okay with the weight. SP1 is holding up pretty well.