both should be fine, haven't heard either in person, I'm sure the community here would love to hear clips if you can.
In both cases, they (and any other pre-amp or overdrive) would go before the CAB.
Things that go after the CAB would be reverb, echo, modulation etc. although there are cases where it they may be happier pre cab (univibes, phasers, tape echo etc.), more for replicating vintage effect tones than technical reasons.
Andy