I am not sure what you are trying to say. What I can say, since I own and frequently ride two of these, is that they are worth their price to me. They are fantastic at taking care of the unseen bumps and making the ride more comfortable, plus they don't have the bouncy feel of spring seats.

What I mean is that I don't suffer any significant discomfort from bumps. Unseen bumps that surprise me are rare and spending money and time solving that non-problem is not something that motivates me.

Clearly, some people ride brevets without trouble. This thread is perhaps not for those people.

Then I guess a better title would be "Is a suspension seat post worth it to the people that think it is?"

This thread has motivated me to research the ST thudbuster for my trekking bike.

I see now that my negative experience with a cheap pogostick seat post doesn't tell the whole story, and much of whats been said against them sounds a lot more like chest thumping then actually useful information.

I would never use the telescoping ones I notice nothing compared to a regular rigid post. But if you look at the thudbuster posts they work pretty good. I bought one after I messed up my l4-l5 and l5-s1 vertebrae.

My first serious commuter, which I rode for 10 years, had both a suspension fork and a suspension seat post. I would have paid money to get rid of both of them. Eventually I did, getting a Giant Seek 0 with neither.

My route at the time was over 4 miles of gravel road and 7 miles of pavement (some rather rough). Sprung seat works better.

I also had a suspension seat post on my first bike as an adult; Fisher Nirvana.
At some point it quit working and I did not notice.

Also agree, the combination of tire size, tire type, tire pressure, saddle - and I would add, real cycling shorts - makes vastly more difference than the suspension seat post I had.

Not a member of the Brooks Saddle Cult personally, but I do agree that finding a saddle you really like is huge.

Also acknowledge, this was one of the telescoping variety that came originally on a $450 bike, and I am pretty sure Fisher (Trek, really) didn't put $150 into the seat post on a $450 bike. Far as I know, the high end ones may be better.

Were they a good quality fork and seat post, or entry level?
After putting a Rockshox Paragon fork on my trekking bike, I found the commonly repeated criticisms of suspension forks were totally unfounded. I suspect it could be the same for seat posts.

My experience with them is limited but negative.

Entry level. But I have no problems riding without suspension now that I've gotten rid of that bike. They were just extra weight on an already heavy bike.

A section of my commute is on an abandoned road that's reverted to single track, and we're adjacent to a 9 miles trail around a watershed lake where having a suspension fork has proved to be very functional. It's got me thinking about a seat post now that I know there's quality options that don't effect normal riding.

Kills power? Wives tale. Or you are able to go faster with less fatigue, yes.

The Thudbuster is the best I ever came across. Its built extremely well and you easily change the flexi pieces to suit the stiffness or rider weight without removing the post. I bought one for my wife's road bike and mountain bike because of her lower back problems and she has loved it for over ten years..... The only downside is the weight because comfort comes with a penalty and even though its aluminum its probably heavier then most....