My experience with MS re: the SP2 was quite different. I bought the SP2 in Dec 2013, within a week it was ruined by a failed MS firmware update. The SP2 began

My experience with MS re: the SP2 was quite different. I bought the SP2 in Dec 2013, within a week it was ruined by a failed MS firmware update. The SP2 began randomly waking up from sleep mode, annoying, and hazardous when it did that stored in a briefcase (because it would heat up). A few weeks later the MS store exchanged it for a brand new one without hesitation. Subsequently I've had other problems with the SP2: the Type Cover failed, the power supply connector came apart, each time the broken item was replaced with little hassle. That's not to say the SP2 has been trouble-free. Numerous software/firmware issues were evident but most were resolved in the first 10 months it was on the market, coincidentally about the time the SP3 was being introduced. The SP4 seems like it offers substantial improvements, though it is costly. I'm inclined to wait a while before seriously considering purchase, give it some time to get the bugs worked out, and who knows, the price may come down a bit next year.