I have used tabac and its great it lathers just by looking at it and i have tried paraso its also great stuff
I've found in my short DE experience hat I really love RazoRock soaps - they lather well, and I love the scents of the ones I've purchased (XXX, Captain's Choice, and ABCBA). Also, if you like am almond scent, Cella is a great soap at a really nice price. I just ordered some TSD, and am looking forward to adding that to my rotation as well.
Congratulations on kicking the can to the curb, as it were! Making a great lather is definitely one of my favourite aspects of the daily shave. Sort of like how much more satisfying it is to drive a car with a manual transmission than one with an automatic. Excellent choice with the Arko as well, I love the stuff personally. But don't dismiss the Williams puck down at the corner Rx either - it can build a great lather as well and the scent is just lovely IMO. Enjoy!