Still mulling over buying one myself. Are you generally happy with the purchase? I know the app store doesn't yet have the same volume of apps on iOS/Android, but have you come across any issues finding apps?
Games are still a great big fail on the RT, and I'm still waiting for VLC for the RT, but every other category is pretty much covered for me. There're beautiful and useful Reddit apps, Twitter apps, Youtube apps, Pocket/Readability/etc apps, comic reader apps and so on
The Surface is nice hardware, but yeah, Tegra 3's looking a little long in the tooth at this point. Still, the Metro UI really
really comes into its own on a tablet, I say go for it if you can spare the cash.
While I'd usually agree with you, it's not true, when it comes to first generation consumer electronics. The second revision a year later is better in almost every possible way. See iPhone, iPad, Zune, Surface, Kindle, Nook and there are probably other examples I don't remember.
I wager MS are still 3-4 months away from even announcing the next iteration of the Surface, and it'll most likely come out just before the end of the year, which leaves Miles more than half a year to enjoy a Surface should he decide to pick one up now. If he doesn't already have an iOS/Android tablet, there's no need to wait, IMHO. Just get the v1