The highest resolution of the Acer P1185 is SVGA (800x600). That's 39% less resolution than a XGA (1024x768) projector, which is the most frequently found resolution. Across all comparable spec projectors that are a similar age to the P1185 the resolution ranges from nHD (640x360) to DCI 4K (4096 x 2160).
We compared all the other projectors that have a resolution of SVGA (800x600) to this projector and we think the Epson EB-S04 which is cheaper; or the Canon LV-S300 which has a better Rating are also worth considering.
If you are looking for a projector with a higher resolution then you might want to look at the Optoma DX342 (XGA (1024x768 and higher rated) and higher rated).