I am am having a hard time deciding on what stroller/travel system/two items to get. I need something that is going to be all terrain. We spend a lot of time (feb-nov) on the ball fields (soccer, t-ball, softball) so I need something that can easily go on dirt, gravel, grass, etc. Any suggestions? Also, if I don't go with the travel type system what is the best infant seat/carrier to go with to attach?