[Weaseltail]

I've had good luck with an all LHP rotation, but I built my park around it. I also think there are more quality RHP than LHP available. Guys like Corbin, Snell, Paxson, Kershaw aren't that great and tend to get hit hard at higher levels. And the better LHP starters are pretty expensive and not readily available.

Barker and Dierker are great SP for teams on a budget, but IMO they get exploited at higher levels. There are a lot of them around, so some are always going to do well even in higher leagues, but I don't think they compare all that favorably to mid/high-quality diamonds (although they're significantly cheaper), although the way I rank SP may be different.