A bunch of Mullard OC42s and some OC71s -- build suggestions?

[mordechai]

I've inherited a decent lot of OC42s...most are around 65-75Hfe and little or no leakage.  Would these be suitable for a Tonebender MK IIi or a Bizzaround?  Maybe something else?

As for the OC71s -- I know they are great in a Rangemaster, but are there other circuits that might work well for these or maybe for a combination of the OC71 and OC42s?