What price are you looking to pay and is 120" the width or the diagonal.
For the $$$ the newest generation of LCD panels will simply rock the world of the 7205, but the 7205 may be a bit brigther than the AE900 or Z4 which may count for something in your decision making process.
But, at 120" diagonal either the Z4 (sanyo) or AE900 (panasonic) will be able to project a solid image in a light controlled theater that will match the 7205, at what may be a fraction of the cost. The AE900 is around $1,800 after rebate from Visual Apex (use link on this site).
Also, read up on various projectors w/reviews at
www.projectorcentral.com which has some good info available.