You can get water color pencils that will dissolve when you put them into water. Gives you a lot of control over where the color goes. Also, if the effect is too harsh for your painting, you can put a wash on the paper before hand and they will blend really well.
I use both, depending on what I'm doing. Pencils are great for definite, fine lines, stems, grass, etc. that you can't always get with a brush. If you have a planned project in mind, not just winging it, you can use the pencils that match the paint color you are going to use, for an outline drawing and then when you come back through with the paint they will disappear! Buy the most expensive ones you can afford as this is something that the quality will show in how easy they dissolve and flow into the painting.
Another thing, I could not paint without rubber cement, for resist, on a painting. Keeps bleeding to a minimum and you can keep our colors separated, if you let them dry in between.
Michael's may have water color pencils but I'm not sure. I know Hobby Lobby does and you can get a coupon for 40% off almost anytime, off the internet. I was talking about pencils not brush pens, is that what you meant?
Yes, they have those at Hobby Lobby, for sure...I even have some around here somewhere and have used them years ago but for some reason I didn't remember the term, brush pens. Maybe they have another name or I have just forgotten, as it has been years.
I used Four P's advice from a long time ago :) use Tinypic.com ..Go to Tinypic.com and press "choose file" then the green box that says "upload now" then a box will appear and you have to unlock the code. Then press the green box "Upload Now" again. Then choose "IMG Code for Forums & Message Boards." Copy the image. Then come back to Kingwood Underground and copy paste your image to the fourth box.. The image URL. Remove the inside   and leave the outside  . Or it will not work.