I already have the Fortin Cali. Bought it shortly after Nolly on a previous sale, but initially went with Nolly over Nameless because of the versatility. I only hear good things about the Nameless suite for down-tuned grit, though!
I'm currently averaging one new NDSP plug-in every 6 months or so. One thing I want to be careful of is stacking on too many options for myself. These are far less expensive to acquire than the actual amps they model, so it's really easy to get carried away with them!
That Petrucci Archetype, though...ugh! Do we know if any part of it is based on the JP-2C? That's a bit of a dream amp for me. I haven't seen a bad review of the suite.