Hey people. Ive been looking at the obdeleven device and pro package (£65 all in) for some time but theres a deal on the carista (£21) on amazon with 1 months free all in applications for a third of the price of the obdeleven at the moment and although I wont be using the full activation features of either after I have finished tweaking mine and the wife's Audi's im in the frame of mind that the carista is the better and cheaper option for what I want to do with it as I can still read errors after the offer with either device. Is it really worth me buying the pro pack obdeleven if the carista offer implies that it does everything the obdeleven does?????? Any preferences or experiences helpful please people.