Here is a little comparison between the new cheaper iMac and the entry lever 13" Macbook Air. The iMac is priced almost spot on with the entry 13" Macbook Air (with the iMac being priced only £50 more expensive). Let's compare them then:
Screen
iMac = 21.5" 1920x1080
MBA= 13.3 "1440x900
winner = easily the iMac
Processor
They have the same processor, but the iMac performs around 10-15% faster multicore wise.
winner = iMac
GPU
They both have the same GPU (Intel HD 5000)
winner = draw
RAM
iMac = 8Gb
MBA = 4Gb
winner = easily the iMac
Storage Capacity
iMac = 500Gb
MBA = 128Gb
winner = easily the iMac
Storage Speed
iMac = 100Mbps read and write
MBA = 700Mbps read and 300Mbps write
winner = easily the MBA
This really isn't overpriced when compared to the MBA. I'd say it is a very tough chose for anyone that is looking to spend roughly £900 on a Mac (or £700 on a refurb version) and doesn't need it to be portable.
Screen
iMac = 21.5" 1920x1080
MBA= 13.3 "1440x900
winner = easily the iMac
Processor
They have the same processor, but the iMac performs around 10-15% faster multicore wise.
winner = iMac
GPU
They both have the same GPU (Intel HD 5000)
winner = draw
RAM
iMac = 8Gb
MBA = 4Gb
winner = easily the iMac
Storage Capacity
iMac = 500Gb
MBA = 128Gb
winner = easily the iMac
Storage Speed
iMac = 100Mbps read and write
MBA = 700Mbps read and 300Mbps write
winner = easily the MBA
This really isn't overpriced when compared to the MBA. I'd say it is a very tough chose for anyone that is looking to spend roughly £900 on a Mac (or £700 on a refurb version) and doesn't need it to be portable.