Presentation paper i suppose. I dont use it for proofing, mostly a3/a4 photos but i'd like to print of images to present to clients (not as a proof)[/QUOTE]
Then you have to decide whether it is just for the client to look at, or whether you need an archival quality print that will be framed and displayed. If it is just for the client to look at, a matte 150 - 200 gsm presentation paper would be nice. Anything cheaper will work, but will be under-kill for the quality of the Ultrachrome inks used by that printer.
If you are trying to "wow" the client, there is a whole range of fine art papers available, in a range of surfaces, tones, and textures.
If you are proofing (which this printer is great at, when set up correctly with a quality RIP), you will want a dedicated proofing paper.
I had a 890 series printer (similar to what you have), and kept several rolls in stock for different purposes. I also kept some sheet stock around for photo printing.
Most of the time, I ended up printing on an Epson Workforce using 20 lb. copy paper. I found sign work more lucrative than fine art printing, and sold the 890 to a guy that sold fine art prints and frames from a storefront.