I too must admit to a growing love of the return of the real Superboy.
It's very very odd at first as i've been inured to the 1986 revamp that vetoed the Boy of Steel and since then obviously we've had only stand-ins of one sort of another, seeing the real Superboy step forth then definitly makes the reader gasp aloud, it's been so very very long since Superman was also a teen hero... the implications are stunning as this isn't the 'Smallville' take on his early years it's the proper Silver-Age 'Worlds Greatest Teen super-hero' treatment. It makes Superman a seriously seasoned veteran super-hero, rightly the worlds #1 in fact.
Secret Origin grows in stature the more i think about it, the real wealth of the book is in the detail and the nice character touches. If this series does what Byrnes 'World Of...' minis did back in the 80s it will only enrich the current mythos hopefully and finally lay down a solid backstory every writer can work from. I think that's what's been missing since Infinite Crisis turned his continuity inside out.
When I was a kid, my uncle gave me all of his old comics, and the vast majority of them were the pre-crisis tales of Superboy and the Legion of Superheroes.
LoSH has always been my favorite superteam, and Superboy has always been my favorite character. To see a teenage Clark back in costume is just fantastic, and I really am excited to see where they go with it.
I just hope that it doesn't steal Conner's thunder, as he has definitely earned his spot in the lime-light.