The only features I want with Buxfer/Wesabe is to be able to check my balance over SMS. I don't want to enter individual transactions or manually upload QIF files from my bank's website so it should be imported automagically. Periodic reminders to pay the rent might be useful too.
Fortunately, Wesabe has a tool that retrieves your bank data and uploads it to their servers though they lack the SMS features and their site is fugly. Buxfer looks pretty good and has the SMS features, but I have to submit my bank data through a web form.
If Buxfer implemented what Wesabe has, I'd definitely use it. Maybe I'll just write something to grab my bank data and upload it to Buxfer in the meantime.