HTC Touch Diamond - slow response?

According to this comparison review of Apple iPhone, Samsung Instinct and HTC Touch Diamond:

HTC Touch Diamond:

"The phone's Microsoft Mobile 6.1 OS offers a mini-Windows experience. It's the smallest of the three phones, the slowest to respond and the warmest in your pocket. It has the best 3.2-megapixel digital camera, is EVDO-capable for fast Internet and has four GB of memory built-in, a good start, as well as an external Micro SD slot.

Unfortunately, the smaller screen accommodates a cellphone-like keypad that shares two letters on each screen button, so typing speed is diminished.

The phone has four push buttons and a four-way centre push navigation wheel, which essentially does what the touch screen does. It's strange to have an older analogue-style navigation wheel on what could have been a larger touch screen on the same-size phone. The magnetically stored stylus helps.

Still, the screen is the sharpest in this group and the mobile browser is second only to the iPhone's. There are more than 22,000 Windows Mobile applications you can download. The included Teeter game shows off the phone's ability to sense its screen orientation."

My previous Windows mobile phone was great in terms of applications but it was slow to respond and the user interface was nothing like iPhone or Instinct. By reading this review, it seems that HTC Touch Diamond might be suffering from the same Windows mobile response issue. Until the release of Windows mobile 7 or the version with all the nice touch-screen support, I might have to pass Touch Diamond if it suffers from the slow windows mobile response issue (despite HTC's nice touch interface on top). I will see when I get a hold of one. Next 12 months should be pretty exciting for the touch-screen mobile phone market!