To Curb or not to Curb

After many years of trying to get our yard looking halfway decent, we finally had the labor this past summer (Jeph) to weed and rake and just get the yard looking good. Then we had to decide on curbing, should we or shouldn't we and which kind should we get flat or raised, colored or plain.  We decided on flat and uncolored, since nobody could see it from the road anyway, there was no purpose in staining it.  Now we just need to get plants in this spring and summer.  This represents a lot of work on Jeph's part and now we need to keep it up.  Again this was last August.