There are no high quality manual pull down screens that I know of. Your projector is a short throw so the flatness of the screen is more critical then even with a longer throw projector. Any waves in the screen due to the steeper angle of projection will cause annoying shadows in the image. To get a drop screen to stay flat it needs to be tab tensioned, they are all electric to my knowledge and can cost considerable more. Standard pull down screens are almost always going to wrinkle and curl to some extent over time or even right out of the box. Whats your budget and what size are you interested in, the bigger they are the worse the issue is and even tab tensioned can sometime curl also.
"Smart enough to know better, to old to care" ------ Dedicated Bat Cave Home Theater, JVC RS49U/Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 18TB DroboFS NAS