I use Stampin' Up ink. I love their inks!! I love the family colors, I love the coverage and that I can get matching paper and ribbon and brads!
As long as I clean my stamps (stamp cleaner is a must and a stamp scrubbing pad) they don't stain. Some of the cheaper clear stamps will discolor a little but those tend to be my cheaper stamps and I normally don't have much invested in them and got the for a quick project (like the 1.00 stamps from AC Moores and such).
Stazon ink will stain your stamps, but stazon cleaner will take it off as well.
If you have any questions about Stampin' Up ink, feel free to contact me or visit my blog for projects that I did using them.
Which stamp pads have you been using so far? There are several different types, pigment, dye and then stazon.
Pigment inks are opaque, stay wet longer than dye inks, and don't stain generally. Dye inks can stain, and stazon needs a stazon cleaner to get it off (as do their glue pads).
You should clean your stamps after each use to avoid staining, though some inks will stain over time anyway. I would get a stazon stamp cleaner and a scrubber (I have one I bought in a craft store that was quite inexpensive - $3), use that on all your stamps to get rid of the stains.
I have all those types of inks and don't get stains.
I don't worry about staining since it wont affect the stamp, but I do try to wipe them down with baby wipes after I use them. The ink you use more depends on what you want to achieve as far as the look and what you are stamping on. The Staz On stamps are for stamping on acrylic, photos or even fabric. They stain the worst, but for certain types of stamping they are really the only ones that work. Chalk inks wipe off very easily, but they also take a long time to dry and dont give as crisp of an image.
I picked up a colorful little brochure at a big box store that had a chart about types of inks... showing what they are best used for and types of paper they are best for. It has been helpful to me because I was always trying to find out the same thing as you.
I use Distress Inks a lot. I love the colors. If I plan to use my Copics on the stamped design, I use Memento Tuxedo black. I use Staz On for a lot of sentiments or titles. And Versa Mark if I want to emboss or use Perfect Pearls. I've tried Chalk Inks, but I'm not a fan - the colors seem dull and drying time is insanely long. And, like someone else said, staining doesn't matter to the design, but when it starts to bother me, I clean them up with the Ranger stamp cleaner. I love the way it smells!
I generally just stamp off the left-over ink and maybe wipe them down with a damp washcloth (I keep a black one in my scraproom for just that purpose). But I don't stress over staining. I just think of my stained stamps as being well-loved!
distress inks are water based (as Tim Holtz pipes out loud on every tutorial video LOL) and thus super easy to clean, just run the water or wipe with baby wipes. Pigments are okay - some more staining than others. I find dye inks are the hardest to clean, need to use the stamp cleaner and scrub..