Can't go wrong with either. However, I prefer P1 because,
Readily available at Advance and Kmart
Lately been getting them for as low as ~$3-3.50 with AAP online codes, huge discount from the ~$5-6.50 at Kmart and AAP. Also, often a part of oil/filter combo promo deals at AAP.
As shown here in some applications the P1 has substantially more media, eg., see Bill in Utah oil filter thread for his Subaru comparing the Wix and P1 media area.
And, I really like the texture for hand tightening installation.
But, both solid, take your pick.