The updated 2016 or 2017 Dr Collins version (which contains the passages in both biology and chemistry) is as close as it gets in providing similar passages. If you need extra practice use a MCAT material because they contain passages in the chemistry section as well (and maybe biology). Dr Collins is pretty much the best for the chem and biology section imo if you have a newer 2016 or 2017 edition (its just super concise, closest material you'll get to the newer 2017 PCAT format, and saves time in studying). My roommate had to borrow mine because she bought a used outdated 2015 edition that did not contain any passages in both the biology or chemistry section, new study guides for both the chemistry/biology section, or extra tests that was close to the new PCAT format. She was also told by the seller they were relatively the same to the newer one, which isn't totally false but my roommate used my guide more than hers for the chem/bio section which say alot so beware. Kaplan is trash and way too long to study with unless you have the time, but some will say its good enough if you have good test taking skills and don't want to spend alot. It is not concise at all and very outdated. I own an older Kaplan and its literally the same as the 2016-2017 edition (which is a joke). They do come with 2 extra practice tests so that's a plus.
TLDR: 2016 or 2017 Dr Collins is the best hands down for studying chem and the biology sections. Beware of buying an outdated version of Dr Collins (2015 or before). Lastly Kaplan is trash but is a budget study guide (only referring to the book not course). Good luck
PS: Math Destroyer for quant. Essay (just follow Dr Collins format), Reading is either you're good at it or not (can't really improve on it imo and don't need to waste time trying).