While still waiting for approval of my refund, I could finally try a UBASS-EM-FS, which I liked more than my Rumbler. Being in a store, I am sure I will get no surprise.
What I found, on a side-by-side comparison with the Rumbler, is that I think strings on the Rumbler (Aquila Silver, which should be almost the same as Thunderguts) are louder: is it an impression, or something objective? Moreover, I like them much more under my fingers, but I know this is very personal and many find them too sticky; I found that sensation pleasurable, and find Pahoehoe too hard and "cold".
So I think the first think I'll do is to restring it with Aquila strings. Aesterically I'd go for the new Thunderblacks, which acoustically should be the same as Silver, but black. But I'm temped from Thunder Reds, which I tried on a Shortbassone.
Does anyone know if the Reds are louder then Thundergut/Silver/Thunderblack?
Thank you.