Honda Car Forum

hi all, i have a 2000 integra gsr. i got my cat and both O2 sensors replaced a couple months ago at a muffler shop. i got my check engine light again and went back to see what was wrong. the cat was burned out. they told me it was the low bank 1 O2 sensor was defective, so my cat had been damaged. I paid $300 for the new aftermarket cat and paid $120 for both the O2sensors. they were cheap O2 sensors. does anyone know which O2 sensors are great for my car? the oem ones were $200 each. any recommendations? and any opinions on my problem? the muffler shop is charging me $160 more to replace the catalytic converter and told me if i replace the O2 sensor, the problem with ruining the cat won't happen again. any knowledge about this?? thanks for any help