Source: http://gizmodo.com/5823109/5-best-alternatives-to-apples-new-product-lineup/gallery/
MacBook Air = Samsung Series 9
The Series 9 is like the MBA, just slightly bigger. Unfortunately that includes the price as well. For $1199— what you'd pay for a 2.38 lb., 11.6" MBA with 4GB of memory and 128GB SSD—you get a 2.31 lb. 11.6" laptop with 2GB of memory and only a 64GB SSD. The other smaller thing about Series 9? Its processing speed: 1.33GHz vs the MBA's 1.6GHz. $1200
MacBook = Toshiba Portege R835-P70
In terms of performance for price, the R835 gives you more value. It has a 2.3GHz processor, 4GB of RAM, and 640GB HD, double the available RAM and triple the available standard HD in the last iteration of the MB (before, you know, Apple killed it and all) for $65 less. $835
Mac Mini = Dell Inspiron Zino HD
Sure the Mini isn't technically designed as an HTPC but some of its best work is done as a home theater-serving hockey puck. The Dell Zino does essentially the same job, albeit as two stacked hockey pucks. It's got the same basic stats as the Mini, 2.3GHz processor and 2GB of RAM, but the Zino is double the height in order to make room for the tray-loading CD/DVD/Blu-Ray combo drive. On the other hand, at $300, the Zino is half the Mini's height in money. $300
Thunderbolt = USB 3.0
Thunderbolt has a data transfer speed of 10Gb/s. USB 3.0 has a maximum data transfer speed of 5 Gb/s. It's half but available on things that don't start with Mac. What more do you want? (image courtesy of Maximum PC) $Depends on what it's attached to
Thunderbolt Display = Dell UltraSharp U2711
The Thunderbolt display's 27" viewing area with 2560-by-1440 LED-backlit resolution and ability to daisy-chain peripherals is just brilliant. But if you don't really give a shit about stringing your hard drives to your monitors (or you only have one of each and are already connected through your computer) then you'll want to check out the Dell UltraSharp U2711. It has a 2560 x 1440 resolution 27" display with 80,000-to-1 contrast ratio. And it's $100 less. $900
[Top image courtesy of Shutterstock]