I may be the last person that should answer this...but in your question you bring up the abilities to run three OS other than Linux (Palm, DOS and Android). From what I've read here it seems like running anything non-Linux will have you compromise in speed and/or stability - not to mention the added memory consumption. I think you may well be able to run all three (four if you 'keep' Linux) but you may first question how WELL it will run and base your decision on that. Then again, someone may well tell me I'm completely wrong and that you can do it all in lightning speed