I've only been to 4 indoor venues that hold HS meets:
SPIRE, Akron, Kent State, and Mount Union.
If you were only comparing the buildings themselves, then SPIRE is the best hands down. Even though the drive doesn't feel as long as it is (90 min. from where I live), it's a "turn-off."
I'm a big fan of Akron. I didn't feel like there was too much difference between it and SPIRE aside from the amount of bleacher seating. The separate room for team camps and the outdoor track across the alley for warm-ups and cooldowns are a plus. Akron manages its indoor meets as well as anybody which is a huge plus.
Kent is OK but felt extremely crowded. I haven't been at Kent for a few years. I'm told they now have field turf on the infield which probably makes it feel better to those who are on the infield for hours.
Mount Union obviously can't compare since it's not oversized like the other 3. I've attended 2 meets there, and 1 was horribly overbooked. There were way too many competitors, and it took forever. Thankfully, they limited entries the following year which made things better. Even so, it's not a comfortable place to watch a meet until the final events when most people have already left.