The DX44HP is the updated version of the older DX44V. The biggest advantage to the new version is that they've doubled the power output. The 44HP now boasts 40+ watts modulation and 2-15 watts deadkey.
Like most newer radios they've also switched out all the green LED's and lights to blue. You also get a dimmer control so you can turn down the lights so they're not so hard on the eyes at night. They also cone with a built-in SWR meter so you can make sure your antenna system is tuned in. All in all, an excellent radio for not a lot of dough.
Large Galaxy Meter
Blue LED Display Lights
Automatic SWR Circuit
Automatically calibrates the SWR meter to give you an accurate SWR reading
Variable Output Power
Allows you to lower your RF Power output
Built-in Roger Beep
Dims down display lights
Allows you to hear what your transmission sounds like
High SWR Alert LED
Lets you know if you have a high SWR that could damage the radio