I use an IET DE-5000 LCR meter. Mine has both tweezers and Kelvin clips (i installed these to replace the alligator clips that came with it). It will test ESR at 100kHz and capcitance at 100/120/1k Hz as needed - it also has a 10kHz frequency available. Of course it can do many other things as well so it's much more than an ESR tester . . . i use it regularly, so well worth the $100 i spent on it.
Richard Peterson