Wideband sensor location

[Halon]

I installed my wideband 1 week ago. I had Jet weld the bung for me. He mentioned that where I put it may be too far downstream then what I'd typically want. I just want to see the general concensus on here. Mine is the PLX M300, and I located the sensor just after the flex section because PLX reccomended it to be a minnimum of 24" back in the exhaust, but before the cat. I chose that location because it would be before the cat if the car had one, it's over 24" away, and it's a convenient spot of the wiring because it's pretty just slightly forward of the firewall. Everything appears to be working fine, but I just want to see where everyone else is locating there's, and what may I run into with it located where I have it. I'm not putting it in the stock location because I feel that is a bit too close to the turbo. If I do move it, I may move it to just after the DP bend.