The stock ToneX One has some very good bass models* such as The Fridge (SVT), and there are a lot more on ToneNet as captures.*
The Bass editions include 150 more bass presets (not models), plus a license for the Signature Bass Collection (150 models) for download. They are selling the latter separately for €100 (here before VAT), so if you buy a new Bass edition, you’re getting those models at a major discount off that price. But as I said, I don’t actually want or need 150 more models, and I wish they would offer some separately.
* as I understand it, a Capture captures a signal chain at a particular set of settings, while a Model emulates the signal chain with its actual controls. So if I change the Gain or EQ on The Fridge (model), that should react similarly to the controls on a real Ampeg SVT. But if I use (say) a GK 800RB capture from ToneNet, that was captured at certain settings, and while the Gain and EQ on the ToneX still do stuff, they aren’t modelling the equivalent controls on the GK. A Preset then is the amp model or capture plus the other settings (compressor, EQ, effects etc.)