Whiteboard-like Sheets for Agile Modeling On Walls

First, please read this: Agile Modeling Pictures.

Agile modeling needs lots of "whiteboard" space -- but that does not imply one needs official whiteboards. There are several alternatives:

• whiteboard sheets
• whiteboard paint
• whiteboard wallpaper
• bathroom shower waterproofing sheets (big, cheap, work as whiteboards)
•  ???

The type of marker pen combined with the type of sheet is important. Note the hints below on complementary pens.

Comments below on a few options...

Magic Whiteboard

This is the best solution I've seen.

http://www.magicwhiteboard.co.uk

Plus:

• erases well
• plain white
• comes in easy-to-use rolls

Complementary Marker Pens:

• Expo

Rediform or National Brand or Avery Write-On Cling Sheets

Easily available in: North America

Plus:

• erases well
• plain white

Minus:

• separate sheets mean that one must tape them all to the wall
• they have a "good" and "bad" side in terms of erasibility... very subtle to find/remember
• difficult to separate them neatly along their perforations

Complementary Marker Pens:

• Expo

Other:

• if writing is "baked on" after 1+ days, will erase with warm water, soap, and "elbow grease"

LegaMaster Magic Chart, Leitz Easy Flip, Magic Flip Chart, etc (many variants sold in europe)

Easily available in: Europe

Plus:

• easy to set up wall -- long rolls

Minus:

• less erasable than National Brand solution
• some (not all brands) have cross-hatching, though in practice this has not bothered me or the teams i work with

Complementary Marker Pens:

•  ??

Other:

• if writing is "baked on" after 1+ days, will erase with warm water, soap, and "elbow grease"