Out of the three that you have mentioned I would go for the schumacher sv2, the losi is good but hard to set up, the h2 not really been seen much so not sure so sv2 has been used and seems to work well
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Schumacher kf
Schumacher sv2
Durango Dex210
Carisma gtb x2
Schumacher gt12 x2 
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