What's the actual benefit of non-locked diffs on a crawler though? I don't yet know how much the Venture will cost in Finland, there's basically only one vendor that sells HPI stuff and they haven't listed it yet... but I imagine it'll be around 400€, maybe a touch more. TRX-4 in the meanwhile is 530€ (of course, Traxxas has the usual benefit of local parts support).
I'll still be a track driver first and foremost - well, at least unless the local track vanishes - so I don't know how much time I'll be putting on the crawler. Going overboard with the cost doesn't seem too appealing, in any case.
If money wasn't a concern and I had a full size car to move the stuff around in, I'd probably just get a 1/10 Summit for the versatility.