I upgraded from Medical 8 to 9 and it is much more accurate. I'm running it on a 1.8 Ghz core-duo, 1GB mem. Toshiba tablet with no problems. SpeechTechnology.com had a special price then of $99 for the upgrade (which essentially is a full version that asks for your previous serial number to activate it.) Now the cheapest upgrade I can find is BestBuy at $313. Probably still worth it, unless your old version is working flawlessly. Next I'm hoping to find a good Bluetooth over-the-ear microphone that works well with it to free me up from the cord. You might try calling SpeechTechnology to see if they can give you an upgrade deal.
PS: I make macros in Dragon 9 to populate the chart. (ie. "Male Sports Exam" "Female ROS") Seems to work faster than picking templates. And if I want to change anything, I just say "select ____" and say the new word. Sure beats mouse clicks, or worse--trackpads!