hello
at some point i am going to bye some new paint brush i do not know what brushes to bye so can you guys give me some help. I do what the not to cast to much thanks

In a nut shell the best you can afford for detail painting, I prefer sable brushes.
for general painting I use a good quality brush from places like Pro Arte.

red sable if you can afford them. make sure to clean real good and re-point them when your done painting and they will last a long time.

These are my favorites for figure and detail painting:

http://www.dickblick.com/products/winsor-and-newton-series-7-kolinsky-sable-pointed-round/

I believe that the W&N Series 7 brushes are made in the UK, so you should be able to source them locally in a fine arts supply store. If not, Dick Blick art supplies is a reputable vendor that I've had very satisfactory seervice from.

Expensive, but if you take care of them, they will last for years. I usually only have to buy one or two new brushes in any given year. I do use the W&N brush cleaner on all my brushes at the end of the day's painting.

http://www.dickblick.com/products/winsor-and-newton-brush-cleaner-and-restorer/

I follow the W&N brush cleaner with a swish in clean water and carefully re-shape the tips before I put them away (stored standing tip up).

I get the brush cleaner locally from a large arts & craft chain store, but unfortunately, no one carries really decent brushes, so I have to order those.

HTH,
Mike