I have so far a PC desktop user, with iphone, iPad, and MacMini as HTPC. Now, it's time for me to upgrade my PC desktop. I am seriously thinking of switching to Mac as my main desktop. Also, I had been a advanced amature photographer for a long time, and have high end digital SLR. However, I haven't done anything on the computer with photo, in ternms of modifying, enhancing, touching, processing, archiving. Since I am upgrading the computer, I thought I would like to start using desktop to do some digital processing,etc. My question is on the choice of iMac. Hope to hear your recommendations: 1. My current display is a 24" Dell monitor. I think i would like to go for 27" on iMac. 2. I don't need huge storage on the computer, as I have many external drive and large home network storage, etc. 3. I don't do video editing at all. Probably won't be doing any in the future. 4. I need good graphic, good enough processing power to deal with Photoshop, etc. when I start doing digital processing of photo. 5. Graphic display should good for an adavanced amature photography. What's a reasonable iMac configuration should I go for, that won't break my bank? Thank you all in advance.