First off, I use ThermalRight XP120 and XP90. I gave up the use of a ThermalTake PIPE101 -- every bit as good as the Zalman CNPS-7000 in performance, and better for the PIPE's lighter weight. But the ThermalRights weigh another 200 grams less, and cool just as well.
Second, some ThermalTake products have been given a bad rap because of other ThermalTake products, the language problem in aggressive marketing displays ["High CFM fan for greater air pleasure" means "greater air pressure" :laugh:], gawdy colors, and so on. And further, tech-support at ThermalTake is very responsive, with personal approaches to e-mail questions.
Third, I was watching the FANLESS 103 for a while last year. The heatpipes and fins are bound to be pretty light, and the overall assembly is lighter than the Zalman CNPS 7000. If you can find a quiet 120mm fan to deploy just behind the fins, or even focused downward on them, the assembly promises a respectable, maybe even stunning level of effectiveness. My problem is only that I have yet to encounter comparison reviews with other products, and given the concept of the cooler, there is some very good chance that nobody will post such comparison reviews because the performance of the FANLESS 103 might be so stunning as to seriously embarrass the competition.
For me, I would've tried it if I had known that it would be released when I undertook my case-mod toward building this system. But I had no idea or vision of such a thing, and I'm not simply going to mod my case to install a 120mm fan in the desired position just for a change of CPU cooler. With my XP120, my temps are between 80F idle and 102F load at 70F room with a YS-TEch 120mm fan -- a very quiet fan for its high throughput.
If you have a place for a 120mm fan behind the FANLESS 103's heatsink fins, or you can conveniently mod the case before doing the build, I'd say -- give it a try.