The first article is rather old, and Apple has updated their MBPs since then. Your DJM-800 + two CDJ-400s setup should work fine on a 17" MBP. The second article has some information regarding USB hubs you might find useful. Are you set on buying a powered one, or are you considering non-powered as well? I don’t think your setup would be very bus-power-demanding, since the units are already powered.
I’ve read those articles and I’m fairly sure that a powered hub is what I need to be safe.
I’ve asked this question in several places and have yet to find anyone who can recommend a solid USB hub that definitely works and can be bought in the UK.
From what I can gather, some do and some don’t.
Before I, or my Mrs, forks out over £2000 on a 17" MacBook Pro, I’d really like to know for sure that the 3 hubs will definitely run my system without any issues.
Like I have said, if I can get a solid recommendation for a powered USB hub that can be bought in the UK, I’d be happy to get the 15" MacBook Pro and save a wedge of cash.
As far as recommendations I use the Belkin F4U017 with no problems. I’ve had as much as two X1’s an APC 40, and a midi fighter all connected through it and it worked fine on a 15" 2.53 ghz MBP with 4 gigs RAM. My soundcard and the hub take up my two available ports.
