The first two are made by Tektro, so you can get those way cheap: $45 or less on ebay for spanky new ones.
The profiles are lighter and very nice though.

Chris

I have Tektro carbon's on one bike and PD QS2's on my other. Both work great, really comes down to personal preference.

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Member of the Litespeed Factory Team
www.litespeed.com

I have the Tektro's... Work great, and have a good feel to them. I really like the looks of the Bontrager's though...

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Some are born to move the world to live their fantasies...

https://triomultisport.com/
http://www.mjolnircycles.com/

I also have the tektro's, nice feel and reasonable price.

I have a set of Tektro carbons coming in the mail. How difficult is it to replace these levers on to a Vision base bar. It looks real easy. Any advise?

Tektros are fine.....

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I shall never misuse Rex Kwon Do
I shall be a champion of freedom and justice

Yup, I like the Tektro Carbon 5.0s. Nice return spring, nice carbon look and comfy lever.

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Fatigue is biochemical, not biomechanical.
- Andrew Coggan, PhD

If you have complicated cable routing with the "sticky" feel, the Botrangers work very well because it has the spring return. Not sure which others have it. A small weight penalty for a ton of great modulation.

they might not fit on the vision base bar... sorry, you might need an adapter made by vision. most shops carry it and it's cheap. the basebar diameter and brake lever diameter only match if it's vision on vision, vision base bar and any other brake levers usually don't work

Tektros do have a return spring...

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I shall never misuse Rex Kwon Do
I shall be a champion of freedom and justice

I asked that question last week, and it seems that most levers work fine with Vision base bars. The specs say that the base bars take only Vision brakes but it's not true at all...so far people report that the following levers work fine for them in their Vision bars:
-Vision
-Blackwell
-Cane Creek
-Dia Compe 188
-Profile QS2

See the thread here http://forum.slowtwitch.com/...rch_string=;#1227390

Well the Tektro 5.0s just showed up and it ony took 1 Guinness Draught to get them installed. Yes it is a tight fit on the Vision Alum bars but they went in and tightened to tourque after a slight sanding of paint overspray inside the bars as well as a few taps with the rubber mallet. All and all an easy job, and man do they fell and look great.