tl;dr:  X11 is middlepool/h20 all over again.  History repeats

Profitable are the entrepreneurs who provide what the customers want.  Even more profitable are those who provide the service FIRST with little or no competition.  Two obvious examples in recent times: H20 the 20-something tech-wizard out of Cali and now TMB.  H20 gave us middlepool: the FIRST website to automagically switch between profitable coins and exchange it to btc.  For nearly a year, H20 ran this model until others jumped on his coattails and eventually won over business through various "turns-of-events".  Profits dwindled and tensions rose as scrypt stagnated and FUD reigned in the the wake of Mt Gox and concerns over scrypt ASICS.  Enter the latest GOTCHA in crypto strategy: X11.  Just as many predicted, the same mentality that ensured endurance of GPU miners is that mentality which spawned a currency that could work more anonymously, with less GPU power consumption, and apparently as profitable as many other coins.  But alas, where is the convenience that H20 gave us?  That's where TMB has entered and is now front and center as the FIRST and ONLY (AFAIK & ATT) pool-switching btc-exchanging service for X11.  My opinion is that it won't take nearly as long as it did for competitors to challenge TMB as it took for them to challenge H20.   Poolpicker.eu has some catching up to do in the realm of pool picking and much more due consideration will be needed to address the various factors such as alt-algos and power consumption.

edit: okay, there's coinmine.pw that also does x11 but not as good as TMB from what I can see