Even though a 97% eclipsed sun is mindblowing, it is nothing compared to experiencing a total solar eclipse. Yes you will get to feel the slow but extreme buildup of suspense, but it fades just as slowly. Being in the path of totality, the suspense buildup climaxes with totality; seeing the corona, seeing the protuberances, being in the dark during daytime, the eerie glow and colors of the sky, the stars and planets that will be visible and actually seeing the shadow of the moon race over you. When totality ends, it ends abruptly, and it doesn't matter anymore that the sun is no 99% eclipsed. You will be full of emotions you cannot understand or describe. You have just watched nature's best show.
I've been lucky to see three total solar eclipses (Hungary 1999, Zambia 2001 and Turkey 2006) and one annular one (Spain 2005) and I always, always get goosebumps when I think back to them.
As for the stars and constellations in Lock On, ED did a very good job. It is almost like a real planetarium program. The only small change I would make is the visibility of stars when it is daytime. You won't see the Pleiades when the sun is within 45 degrees of it.
Just my two cents,
Case