Like the Butterfly Touch, the keyboard on the 1825PTZ offers an excellent layout and is generally quite nice to use. However, due to feedback being just a tad too shallow - in addition, oddly, to a little more flex than we noticed on the PB - it isn't our preferred choice for long typing sessions.
Likewise the touchpad doesn't feel quite as responsive (in multi-touch gesture controls especially), but whether this is due to its coating or different sensitivity settings is difficult to say. Don't get us wrong, though; it's still great to use and its buttons are just as pleasant and positive as those of its sibling.
On the audio front, the 1825PTZ performs just as impressively as the Butterfly Touch. Its Dolby Sound Room-enhanced speakers manage remarkable volume levels for the laptop's size, with clear mid and high-end and even some decent bass.
Unfortunately Acer doesn't offer a matt screen option to go with its largely matt bezel, so any ambient lighting will lead to distracting reflections. Aside from this the convertible's 11.6in screen, with its 1,366 x 768 resolution, is decent. As usual with laptop panels, it's weak on vertical viewing angles and dark detailing, but makes up for this by offering even backlighting, good sharpness and truly excellent horizontal viewing angles, aiding its tablet appeal.
Our experience with touch, and using the 1825PTZ in the unique ways its swivel screen allows, was essentially identical to that provided by the Butterfly Touch, so if you want to get the full story we recommend you give page three of that review a look.
In summary, though, the form factor offers a few worthwhile advantages over a standard laptop. In particular the ability to view documents and web pages in portrait mode is very useful, while the multi-touch enabled screen itself is highly accurate and sensitive to the touch. Its only disadvantage is it can't be used with an ordinary digitiser pen, though you can buy capacitive-enabled styli should you wish to use one.