I always like the modulus, head cheese, type layering. It gives the look a lot of depth..
But I have had a modulus w/o a truss rod since 90-91. It has never moved even a smidge.
Through all sorts of weather conditions, from Hot car, to freezing weather to warm house it stays in tune. You just never need to tune the ting. it is pretty amazing.
Can't say the same for any wood instrument I have ever owned, it's just not even close.
Worcester/ Providence area Bass player, looking to hook up and play some tunes!!