The company I work for is going to buy me a PDA.

Fortunately I get to pick which one I want. I decided on the iPAQ line because of the functions they offer in a PPC. I have been really indecisive on the model because I would like to have the 128MB memory from the h5555, the CF slot from the h2215 all built into the h4155. Only HP engineers, and a select few, know if they are going to be releasing anything like that in the near future. I do have a need for the wireless function at work. With that in mind, I’m looking at the either the h4155 or the h5555. In addition, HP offers an extended 3-year warranty for $159.99. Does anyone think the extended warranty is necessary? By them offering this, it makes me think that they expect the device to fail sooner than later. My Joranda has held up this long, but who is to say about these smaller, more compact devices.
Does anyone have any comments on which one would be the better choice and why?
I asked a similar question about six weeks ago and Anthony Caruana was the only who replied and I appreciate that. I would like to get others views and experiences especially now that the h4155 is available.
Thank you.