The search is the main thing that struck me as clunky - many important parameters were downright missing, making it so I had to manually click through a bunch of results' datasheets. IIRC, electrolytic caps were missing ESR (seems to be no longer the case, although still no ripple current). The values of an individual category don't "cover" all current results, making it impossible to eliminate values. Plus that horrible needle-in-a-haystack interspersing of greyed out unavailable parameters with the still-active ones. All around it felt like it was only meant to locate something I already have specified, rather than guide as to what is available.