I ordered the double rich chocolate (DBC), thanks to reviews indicating it did not use sucralose (and it does not as of 06/12/18).
I've never used ON before, I do not know if it "used to" taste better. As of 06/12/18 the DBC flavor tastes roughly like burnt brownie flavored cardboard. Thing is, I understand without a SUPER sweetener, it can be difficult to achieve flavor, but be forewarned, it is AWFUL tasting. Consistency remains almost the same as whatever liquid you have mixed it into (adds no extra thickness). I tried both water and milk.
On the positive front, it is jam packed with goodies with every scoop. It mixes extremely well (I use milk mainly) and when mixed with other powders, it continued to mix well (I add extra probiotics and stuff for my joints).
I let it sit for a few hours on the counter, everything settled and needed a slight jostle, but (aside from being warm) mixed right back up and tasted exactly the same with the same consistency, which is great as I have had powders that turn to sludge if you let it sit for too long.
For the price @5lbs and 30g scoops, you can't beat it. There are better tasting powders and better powders overall, but you can expect to pay $50-$60 for 2lb for those, I find this powder to be an excellent middle ground if you can stomach it, especially with the prevalence of sucralose finding its way everywhere.
For those not in the know, please Google sucralose, it won't bother everyone, but if you're like me, it did affect my digestive system negatively and since removing it from my diet I have been doing much better.