slideglass.com - could be a slide glass door/window, hardware, etc. type of site or it could be for microscope glass slides. PR 1, ~2.5 Million Google Results. q-j-m.com - could be Quarterly Journal of Medicine, Quality Jogging Mechanics, Quarterly Journal of Machinery, etc. PR 0, ~777,000 Google Results.
slideglass.com is pretty nice.. Atleast low xx$ to an end user.. The second one is crap.. Less than reg fee
slideglass is a really brandable domain. Low $xx - Mid $xx imo. For the second one, I think you should try to get at least Low $xx as demand for L-L-L.com is rising