I have this in one office and to get users happy it was 15 users only. How many can connect 45 .. how many will complain 45.
I have more issues with the balance system on the Aruba. The clustering of Head IAPs is awful.
I setup 2 untis to handle loads on same SID and no go it unbalances the units. I have to create zones ( different SID for clients per unit)
I hope they figure out the balancing part soon.