Got my TN10 yesterday and I am impressed. Head is the same size as the T30, nice beam profile, just slightly brighter and I like the UI. Not as hand friendly as the T30 but it will make an excellent bike light. The free blue Ti is really nice too - this one works perfectly and I like the color.
Made a Best Offer of $40 on the Buy It Now page for a T30 with free Ti and was accepted. 
My T30S arrived today. Beauty - perfect finish and knurling, but I wish you could hide the strobe. LED is perfectly centered, threads are square and well lubed. Side switch is ok but tailcap placement would be very inconvenient on a bigger light. I have the TN10 here with me today as well - did you know you can lego these like Solarforce? Switching the battery tubes makes for two interesting looking lights. 