Ohhhh that's tough! I love me a heavy tank as it looks real driving over rough terrain but the Tamiya looks so damn good. I'd pick metal and detail it to pieces bUT I'm wierd I guess.
Good afternoon,
I would do a Hybrid of Henglong, Tamiya and Mato. Wait!, I already did. *chuckles* Whatever you decide to do, have fun with it.
regards,
Painless