Best graphic printer for my business?

I sell personalized invitations and party favors, I bought a printer (Hp color laserjet 3600) months ago but I'm not 100% satisfy with it because the graphics look like pixelated even if a use a graphic in really high resolution , the colors don't look at all like the real colors in my design/proyect , I have to do 2 files one for my client to preview how it will their invitation/favor etc will look like when they are printer, and another one to print using lighter colors etc to make my printer print the colors I want.... as you can imagine this I do the job twice , and I'm tired of it , I'll LOVE to find a really good printer that prints at great resolution, that will print perfect graphics (pretty much the way I see them on my screen).
I cannot affort(yet) a proffesional printer like a imagePROGRAF iPF9100, but I'll like to buy something that graphic designer like me will use, you know we look at every single detail in our work once is printed.

I need help finding the right printer for my business so my clients and I will be happy with the results!


I can affort a printer that cost up to $1,000 (a little bit more)...
What are the best brands ? how can I choose the best printer for what I need?
I'll like to get a Laser printer because the "ink" last more than in a Inkjet printer. I cannot buy a inkjet printer for what I do because I print a lot of graphics/art work everyday so the ink will not last very long .

Anyone knows what are the best laser printers?

Thank you!