I own a 2005 Speedpro and am at the upper end of the weight range also. I have not had any problems with broken spokes; I am aware that some others have but given my experience would speculate that this may have been a problem with a particular production run or runs. Re the suspension hub: Even with the stiffer rubber thingies I am not sure how much good it does, as at my weight it stays mostly compressed. But it _is_ possible to adjust the brake pads so there is no rubbing on the tire, at least on my bike (whether Dahon used less tall rims for some earlier models I don't know.) So, I consider the Pantour hub to be kind of a no-downside thing; I am not sure if I would have spent big $$ to get it but it hasn't caused me any problems either.
I did find the SDG I-beam saddle and post to give a too-stiff ride, and replaced them with a Thudbuster and Avocet seat, both of which I love. The above poster is correct that to replace the SDG seat one needs to also replace the seatpost, but a standard Dahon seatpost can be had for not much more than $20, so I do not consider this to be a big issue.
Lastly, while the supplied Schwalbe Stelvio tires are great, at my weight and given where I ride I find them to be a bit too small, and will probably replace them at some point.
All in all, though, I am very happy with the Speedpro. It is fast, convenient, the Dual Drive works beautifully, and I have had no real problems with it. And I love the color.
If you want bigger tires and softer ride, the SpeedTR may be the ticket for you instead.