Make sure u get on all of em and check them out properly is all I can say! Take them out for test rides too. If money isn't an issue, take a look at the extreme game king 610, good ballast system (not as good as surtees). Sides are also wider on the surtees, (awesome feature!). Game King has an awesome ride, is very stable, and is absolutely beautiful. if I had a barcrusher 6.1 and a game king 610 side by side and I could choose one for free, id pick the game king. However in real life it just doesnt have the same value as something like a second hand surtees or FC.
Cheers
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