The only scanner I currently have is part of an all-in-one, and EPSON CX5200. It's a printer (that part died about 3years ago), a scanner (does good job, I just need a larger one) and a copier (died with the printer)
I'm sure there's a way to fix it, but I need a need a larger scanner for large background pages I make. I also need a different scanner to do an insane amount of negatives ( I have been into photography since I was able to hold a camera) My first camera was one of those little 110 thingies

And yes, I still have my negatives! (Including actual pictures of the Space Shuttle CHallenger. What a sad day that was)
And the printer part, I have already replaced with my Canon i9900 (which I *LOVE*LOVE*LOVE!) I am going to get a cheap laser printer to do my transfers, I'm tired of going to the copy store and paying them all that money! I really want the Xerox 7700, but that's not going to happen unless I win the lottery considering it runs about $5000.
Anyway, I like the sound of your EPSON Perfection 3170 quality, but I know I will be frustrated if I can't do the larger sizes. I do a lot of 12x18 stuff right now and I hate to buy the smaller one, only to have to spend money again to get the larger one. I just want to spend money ONCE - you know, do it right the first time
deanna