but I noticed my lego collection actually lacks single row standard pieces. so im wondering is their any set which you get loads of those.
Maybe i should just go for the second hand stuff by the kilo.
The best thing I can tell you/show you for this.
1) Go to peeron.com and type in the name/set number of any set.
2) On the parts list, scroll down to a brick and select the part number.
3) A list comes up with the sets that contain that piece in that color and how many of them.
Or, go to bricklink.com and bulk order (which is easy to do through peeron.com as well)
Example below!
I searched Fire Brigade and go the parts list. From there, I clicked on the 1x4 brick.
http://peeron.com/inv/parts/3010
You can see all the sets that have that part on the left (and in what color/quantity).
On the right, there is a link to bricklink.com stores. Say you need a boatload of them in green. You can see that Cincinnati Bricks has over 101+ bricks at $0.09/piece. Click on that price to be taken to that store on bricklink and you can place an order.
If you know what you want, this is the best way to do it. Otherwise, browse bricklink stores for parts and buy whatever you want. Making a wants list helps find the best prices for all the pieces and quantities you want, too.
E: When it gets time to make the new Lego topic, I'm going to come up with some Google docs with tutorials on how to use bricklink, peeron, and brickset efficiently. I think it'd be for the best to make it known to all users (old and newcomers alike) on how to optimize their Lego experience, haha.