There's magic to the 15 DC driver. The TD12's have the super tweeter but the Glenair's don't. The TD 12 cabinet is more bespoke than the Glenair. I've not heard the Glenair's but the Canterbury or Royal Westminster is to die for. Not the 15" driver in the last two is different than the Glenair. If it were me, I'd save for the Canterbury.
Jim
Jim