it depends on you ,it depends on your taste . There is still nothing to be compared with N900 in terms of software,but there are lapses in case of hardware but thats ignore-able .So it depends whether you want something unique and totally a free device or perhaps those new so called fastest greatest devices which apparently become boring as soon as you spent 2 months with them . N900 never let you feel bored . It is totally geeky and totally blended with open-ness ideology.
The only con i have in my mind is its slowness . Deal with it . ciao