while I have not used my pl100 in 8x20 yet I have used it in 8x10 and it is a good film...but there are issues with this film and my feelings are that the larger you go the more with the issues...such as a light banding on the film that is not visible to the naked eye...made some azo prints and that is what I got...fact is that I have NEVER EVER had a problem like that in over 10,000 negatives...the majors certainly do a better job...hp5 or fp4 are both great films..would prefer the tmax but this run does not include it...don't fool yourself tmay400 is THE king of films...beautiful results with azo and platinum!!
Best, Peter