This week in ExtraBITS, Adam Engst helps say goodbye to Macworld Expo on the British Tech Network, Apple gives Bose the boot from its stores, John Siracusa reviews OS X 10.10 Yosemite, and developer Marco Arment wonders if the new iMac with Retina 5K display is a better machine than the Mac Pro for most professionals.
 -- Joining Paul Kent, Chris Breen, Adam Christianson, and host Ewen Rankin on the British Tech Network’s The Mac Show podcast, Adam Engst discussed the demise of Macworld Expo before going on to talk through Apple’s recent announcements, including the iPad Air 2, the new iMac with 5K Retina display, and OS X 10.10 Yosemite.
 -- Bose speakers and headphones have long been a staple of Apple retail, but Apple has now removed Bose products from its online store. It’s anticipated that Apple will soon remove Bose products from its physical stores as well. This may have been planned from the time Apple acquired Beats Electronics, but many believe it’s linked to an exclusive sponsorship deal Bose has signed with the NFL, which bars players from wearing Beats headphones on camera. San Francisco 49ers quarterback Colin Kaepernick was fined $10,000 by the NFL for wearing Beats headphones during a press conference.
 -- A cherished Apple tradition has returned, as Ars Technica has published John Siracusa’s book-length review of OS X 10.10 Yosemite. This is Siracusa’s fifteenth year of reviewing Mac OS X releases, which began with his review of Mac OS X DP2 in 1999. While reviews are somewhat less relevant in this day and age of free software updates, Siracusa’s reviews are always worth a look for their attention to detail.
 -- Developer Marco Arment is considering selling his 2013 Mac Pro and buying a new iMac with Retina 5K display and has written an extensive comparison to explain why. For single-threaded tasks, the iMac actually has a faster CPU, and it isn’t much slower at multi-threaded tasks than the Mac Pro. Plus, the iMac’s 5K Retina display is superior to anything you can use with the Mac Pro, and that will probably be true for some time. Overall, Arment thinks the Mac Pro is an increasingly niche product that is no longer best for his needs.