Sensor Codes

[keithl]

99 with 62,000 miles.

I had an intermittent problem with the car not accelerating properly and at times almost stalling. No CEL though. Car had been working fine for two weeks than CEL
Comes on. I get P1129, P0154, P1127.

Is it reasonable to assume this was causing my accelerating problems? Is my best course of action to replace all the o2 sensors? Anything else I should do or replace?

Also, I always use oem parts but Porsche sensors are $200 a piece. $800 seems kinda steep. Are aftermarket O2 sensors just as good?

Thanks!