Hey Peter! Yeah, it's getting a little tricky to decipher all the differences between Jabra's products. To answer your question simply, no they probably aren't twice as good. Active Noise Cancellation is the thing that drives up the price. The 85t's are going to do a much better job of blocking out noise. The 65t's only have passive noise cancellation rather than active noise cancellation. The 65t's also have a slightly different design that some may find less appealing. Deals are definitely out there, it's just about what you're personally willing to sacrifice. I personally think the 75t's are a nice middle ground. And since I'm a runner, I think it's worth it for the active version that has sweat/water resistance. Hope that helps!