Probably doesn't matter, but I believe the playing surface for 8-footers is 44x88 or 46x92. 45x90 is exactly between them.
I think you'll be happy with either.
pj
chgo
Diamond 8' are 45x90. I so want bigger table, play more tables, little more challenging, etc. If i sell mine and bet a new 8' i'll prob have to toss out another 3-3.5k.... things to ponder.