Charlie,
If you look up, you'll see I just asked Avi this.

I already know the answer though -"You can't".

I just like givin' him a hard time 'cuz he likes says some mis-information quite often IMO.

He'll tell you why the best options are the only ones he knows about too. Can't blame him I guess, but can't agree either.

Check out his AskAvi web site. He posted it here himself, so I checked it out.

Page one -someone asked about 'big screens' and Avi ONLY talked about front projectors -and not all that informed or accurately either.

The basic conclusion seeing to be -get the Plus Piano ('cuz he's got the Plus Piano). Manipulative IMO.

When someone says Big Screen they mean RP 99.99% of the time IMO, and he didn't even mention them like they don't exist.

You can read this post backwards as see my take on this issue.

I think if you have a website meant to solicit questions like these (and you post it on forums like this), you ought to really know what you're talking about very well, and not omit entire categories of information 'cuz you don't think people should be told about them.

Just my opinion though.

Don't mean to be harsh Avi, but I call 'em like I see 'em.