that contour bostonpump cylinder looks pretty comfortable. My Pump is from NWpumpworks and I have had no complaints It feels solid and does the job. but I am also not to consistent about pumping- too messy. I like the dry forms of PE like hanging and clamping, but when I get a place of my own again I’ll throw the pumping back in.
IF you get the contour boston please let us all know how it works.