Trust me, unless Google performs some miraculous overhaul by the time you get 2.2, the new voice app can't hold Vlingo's jock. Vlingo beats the native app, hands down.
When you install Vlingo, it sets itself up as a long press option. If there's already a default program set up, go to applications settings and choose that program. Then clear out the option to launch by default. When you long press, it will give you the option to set the default program, one of which will be Vlingo.
Thanks for that. It was as you said on my DX, except that I had to power cycle the phone first. Initially, when I long pressed the search button, the DX just semi-froze, except that a Home took it back to normal, without doing a search.
I'm also a fan of Vlingo, having used it on my iPhone. I did note a couple of differences already between it and the Nuance software that is built-in to the DX. On making a call, Vlingo easily copes with the Last Name, First Name sort arrangement that I have on my DX, so I can say "John Smith", even though it appears in the Contacts as "Smith, John", whereas Nuance just can't figure that out, unless I say it as "Smith John".
On the downside for Vlingo, it doesn't seem very practical for no touch dialing via Bluetooth, since, unlike Nuance, it insists on a key press to verify phone number selections.