Cleantech, gardiners and WindowCleaningWarehouse all spring to mind.
The changeover's easy enough. Just order duplicate fittings for the ones you already have but get a few spares while you're on.
Remember a reducer connection for each reel. Leave a foot or so of old tricoflex before cutting off, so it's easier to connect the narrower microbore.
Oh, roll out and straighten the microbore rather than trying to wind it on directly from the plastic wrap. For that tip, you owe me your first-born child
If you don't already use one, get a metal reel.