I have the airtool road (2009) - I've only ever used it on my 25c tyres, which I run at 95psi - seemed able to acheive that though.
Nice way to test a pump (if you have a track pump as well) is to fill the tyre to 5 or 10 psi below the desired pressure, and then see whether the portable pump can get any more air into the tyre.
I've used, and would recommend, the Specialized Airtool Road, the Topeak Road Master Blaster (which isn't mini in any sense of the word) and the Topeak Road Morph G.