I have 7 DigiQs in all. I have the NSX-R and I have to say the lights are awesome. The DigiQ-Rs have closed gears,unlike the Regular Digis. This keeps stuff from stopping the wheels. I am thinking of getting the Trueno, But I dont know yet because I also want the Pitworks Skyline with lights. I have the Propo special and it is great, Much better than the regular. The Pennzoil Skyline is exactly the same as a regular Skyline, just different paint. I would go with the Trueno ( I personally recommend the NSX.) The DigiQ-Rs have some major improvements over the old cars, so I would stick to them instead of getting an older one. Hope I have given you some useful info.
