I'm working my way up to 3* weapons, and weapons that you get for boss tokens (sealed sword, antigua, catalyzer, pulsar, static capacitor) should be some good equipment to start with. However I don't know which is more efficient: farming money to buy them from the AH or going on T2 boss runs.
Farming - I'm a good money farmer and I can make about 30k in two weeks, but trying to get enough money for even one boss token weapon means that I'd have to farm for a month or more on T1, which makes the game really boring after a while.
Boss runs - These earn a lot of money and give you the boss tokens but I suck at T2, which means a lot more potential deaths and failures than actually getting the boss tokens.
definitely going to boss run, buying from AH only for those lazy richies.
And when you know you suck at T2, then you need to go through T2 multiple of times until you get used to it. T3 + shadow lair would be a lot harder so you need to get prepared either way.