Theres a lot of other QB's out there.
See the thread about JAR question banks..
In general I don't think it really matter which one you use.
If you can answer the questions correct, and you actually know why they are correct, you'll be home safe.
Some take the memorization approach and thats gonna bite you in the butt eventually - regardless of which bank you choose.
Personally I used jaaqb, but also tried aviationexam and Bristol.
All have their problems and advantages.