I had a pair of Modulus Q5's - fretted and fretless - with Bart electronics. Great basses for sure. I thought they were keepers. They could have bene I suppose. But I played a Roscoe.
We all have our preferences. My absolute favorite...if I could only have one bass is my Roscoe Century fretless 6 but I still enjoy my other Roscoe, Gould and Modulus basses. All of them have Bartolini electronics except the EMG equipped Gould. I prefer the Bartolini electronics but the EMG's in the Gould are very good.