Just a note on the pearlescent - I had one of those with my old CRT projector (needed the gain for the size screen I wanted). I did not at all like the "sparklies" it created. Not bad at all during most viewing, but if you got a scene with real bright white light like a sunlight picture, it was noticable.
Make sure you can see one before you buy, IMO.
(I made my own screen with my DLP and like it better, though admittedly the gain is not there).
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Lex MC1/Sunfire CG/Hales Rev3's x3/M&K SS150 tripoles/Quadscan/Plus UP1100/Homemade screen