db-01 vs 501x/511

[fastinfastout]

I've had a 501x in the past and loved it, dont know why I sold it, but anyway its gone.

I bought recently a 2nd hand db-01, basically to use as a spare parts car for a possible future purchase of a db-01r.

At the moment, my db-01 has got nothing on my previous 501x in terms of handling and driving!

I'm thinking of getting a 511 instead of a db-01r. The db-01r still needs attention in the drive train before it can be reliably used. The db-01r does have a better sealed transmission, but its still not 100% as grit can still get in between the gearbox and outdrives.

So the pro drivers from yokomo drive their buget car bmax, so why dont tamiya team drivers use the db-01?

is there anyone else who has owned db-01's, 501x's or 511's make some sort of comparison?