Need sensor replacement suggestions for Innovate LC-2 WB

[70b5cuda]

I bought an SVO that someone else had modified and I'm chasing down all the issues. One is the LC-2 wideband. AFR shows 7.5 all the time on the tuner studio gauges. The engine was already at operating temp by the time I looked at the LC-2 display in the engine bay. The display was flashing red (8 times) so error #8 comes up as a faulty sensor. From what I've read, the sensor is most likely cracked. The sensor is at the bottom of the downpipe so it's not too high/too close to the turbo. From reading, it just looks like the sensor should be replaced. Are there any good sensors you'd suggest? I don't want to buy something that's prone to cracking so if you know of an upgrade/more robust sensor please let me know. 

[Stinger]

The LC-2 can use a 4.2 or 4.9 sensor. The 4.9 sensor is an upgraded/newer sensor and is also cheaper. That's the sensor we sell.