I have no experience what so ever with these light-weight rigs, but when it comes to light-weight stabilizers you want the smoothest gimbal there is because every micro move you make will get through with a bad gimbal. Ball and socket gimbals, forget about it. Too much friction. Universal joint gimbal, depends on the precision of the construction. The Merlin gimbal seems to be the best option as it's tailor made.

Have you considered Glidecam? It is a different design than the three you mentioned, but its build quality is top notch and it seems the most comfortable to operate.

Well. I was about to order the L'aigle, untill i happened to win a Merlin on auction site at a very reasonable price comparable to the titan's intro price, so fate has made my decision for me.

wish me luck.

GG