Summary: myTouch has become T-Mobile's signature line of smartphones, featuring highly customizable hardware and now, with myTouch 3G Slide, highly customizable software as well. Whatever you think of T-Mo's work here, there's no denying they've put a lot of thought and effort into giving their customers something beyond stock Android or even the "standard" HTC Sense experience available on their competitors' phones.
Pros: Solid Android performance plus highly customized user interface; Great hard QWERTY board; Genius Button and myModes offer exclusive functionality; T-Mobile offers great value on monthly voice/data plans.
Cons: Smaller display and lesser specs compared to other flagship Android devices; Custom UI arguably less appealing than stock Android; Build quality issues with our review unit.
Summary: The HTC myTouch 3G Slide is a nice Android device that's worthy of consideration by first time smartphone buyers and/or those looking for a feature packed mid-range Android device. I imagine the physical keyboard and overall design will make current G1 owners happy, and the physical QWERTY keyboard should win over quite a few BlackBerry users.
Pros: The myTouch 3G Slide has a nice physical QWERTY keyboard; speedy given its 600 MHz processor, HTC Sense UI partners well with Android 2.1.
Cons: Display may be on the small side for some; hinge is a bit wobbly.