Way to loop/repeat DVD on the ps2

YP_BP_R and Y P_B/C_B P_R/C_R are compatible: the slashes in the latter indicates it supports both YP_BP_R and YC_BC_R, which—for most intents and purposes—are the same thing.

The difference, if you're interested (from Wikipedia):

YP_BP_R is the analog version of the YC_BC_R color space; the two are numerically equivalent, but YP_BP_R is designed for use in analog systems whereas YC_BC_R is intended for digital video.

From the Wikipedia entry on YC_BC_R:

YC_BC_R is sometimes abbreviated to YCC. Y′C_BC_R is often called YP_BP_R when used for analog component video, although the term Y′C_BC_R is commonly used for both systems, with or without the prime.

Amazon is sometimes a wretched hive of scum and villainy: more often than not, reviews claim a problem is caused by a product when in fact it's caused by something unrelated but unbeknownst to the reviewer. Having had a PS2 hooked up to an analog and a digital TV over the lifespan of the PS2, I can confirm it supports both just fine.

I don't recall any PS1 games being particularly noisy in my PS2. Generally the drive speed is slower for PS1 games unless you change the settings in the menu.