My buddy has an miller dynasty 200dx that I have used a bunch it rocks. I wanted my own machine but could not afford that much. I ended up with a miller diversion 180. It doesn't have all the bells and whistles of the dynasty but it welds very well. I'm happy.
Went and got a set. They were marked 19.99 in the store so I ordered them online for pick up in store as I shopped lol. They are nice compared to my harbour frieght ones.
For mill and lathe work mostly. Taking sharp edges off and what not. I have wanted to to try and make my own knifes as well. I bought some tool steel a while ago, so the stack of files I got might come in handy for that.