I find the A9home fine for everyday use. The lack 128Mb memory limit has not been a problem for me in the last two years. The OS whilst not finished, is finished off enough for it to be usable(this does very depending on who you speeak to) for most tasks. This system has been my only RO machine for 2 years now and I have no regrets about purchasing it. Processor speed is also fine for everyday use.
At the end of the day it depends on what you are going to use it for. If you require more memory, a faster processor and usb 2, go and buy an Iyonix which give you this and more.