I have both. Blackberries other than the 8330 are rubbish if you are installing applications. The 8830 is a little snappier but, like the others, start deleting your sms messages, emails and phone logs once you hit 10-15 applications (especially Viigo.) This is shocking but true and there is no warning for this bug which has be around for a year. The 8330 has plenty of memory that will keep you happier. It also has the new OS which is better. The down side is that the battery life is shorter and I couldn't get my BlueAnt headset to pair with my 8330 although it works perfectly with the 8830.

No contest, 8330 in a landslide.