Can anyone give me some advice on the Gershwin Theater in NYC?

For xmas, I decided to get my girlfriend tickets for us to see Wicked. Even though I've lived pretty close to the city my whole life (she's from Cali and has only been living here for about a year and a half), I've never seen a show there. I guess I'm looking for where people think the best seats in the house are that would fall under $150/ticket. I saw some that went for $300+, but even $150 is a stretch for me, so that would be way out of the question. Any other tips or suggestions are welcome!