Context limit: useful increments

In the Model Settings the context limit currently can be set to either all or in steps of 1 from 1 to 100.

Proposal for more useful steps (something like this, not necessarily these exact steps):

1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 15 - 20 - 25 - 30 - 40 - 50 - 60 - 70 - 75 - 80 - 90 - 100 - 125 - 150 - 175 - 200 - 250 - 300 - 400 - …

Or, in order to be able to enter the limit directly, either a combo box instead of the drop-down list or just a plain edit box.