A programmatic goal of the Joint European Torus (JET) facility in 2009 is to implement an ITER-like wall, which implies a significant reduction in the amount of carbon present in JET discharges. As a result, carbon charge exchange recombination spectroscopy (CXRS) measurements (currently the preferred ion temperature and rotation measurement on JET) may be hindered. The current CXRS system on JET consists of a suite of instruments simultaneously observing multiple ion species. CXRS measurements of ion temperature and rotation (toroidal and poloidal) are made (in the core and at the plasma edge) both on typical ion species, such as carbon, beryllium, and helium (C, Be, He), as well as on puffed impurity ion species, such as argon, neon, and nitrogen (Ar, Ne, N). A detailed comparison between simultaneous CXRS measurements of various ion species is presented. Results indicate that the toroidal ion temperatures (Ti) and rotations (vT) measured from C, Ne, Ar, and N are in agreement to within instrumental errors. He/Be measurements have proven difficult because of the complexity of the spectra in the 468.5 nm region, though the results are not inconsistent with the measurements from heavier impurity ions. The effect of CX ion "plumes" is being investigated as a confounding factor in the He/Be spectra. The implementation of an ITER-like wall, and subsequent reduction in carbon edge impurity lines, may simplify the complexity of the He/Be spectra, especially if the concentration of Be in JET plasmas increases. Results include analysis using the new CXSFIT routine, developed to standardize spectral line fitting on JET and other plasma devices, such as ASDEX-Upgrade.