Loadcells are great but by their nature are not a long lasting item due to how they measure the force squeezing the sensor pad, I had the Andy Pastore loadcel mod on my G27 pedals and it worked great for a year and a half and then started spiking and eventually quit working...
Unfortunately Andy's loadcel mod is not so easy to swap out a cheap $15 replacement loadcell sensor as the Fanatec Clubsport pedal's loadcell (replacements are $40 and not sold by him) so I went back to the original Logitech potentiometer which is much less realistic feeling but lasts.
I would not hesitate on buying the Clubsports due to the loadcel wearing out eventually, in fact I plan to buy a set myself as they are well regarded for hardcore sim racing, but I will just order a spare loadcel or two at the same time.
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i5-2500k@4.8ghz, Asus P8Z68-V Pro/Gen3, 16GB G.Skill@1600, Noctua D14, EVGA GTX 670 SC 4GB, X-Fi TitaniumHD, HAF932, Corsair TX850, Win7x64Pro, 3 x P2310H monitors, TrackIR4, Saitek X52Pro + Pro Rudders + Cessna Trim Wheel, Fanatec GT2 + G27 pedals + TH8RS shifter, Sennheiser HD580+ Modmic
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