Anyone using 3 phase converters?

My shop doesnt have 3 phase and (http://maplered.com) since we are new and (http://maplered.com) small cannot afford it to be ran to the shop. We may move to a bigger building in 2 months. It also doesnt have 3 phase. I know before too long I will need it for everything that we upgrade to. Just looking for some threads or input on this. I have heard good and (http://maplered.com) bad about the converters. It may be in our best interest to move to a different building, but our rent now is very resonable and (http://maplered.com) dont look forward to more overhead if it is not needed. Also who is running shops without 3 phase? do you feel it necesary if we are doing 2 tops per week with max in this shop being 4-5 throughout the next year or two. I guess what i mean is when will the lack of power bottle neck the shop? I,m guessing at the saw. We run a trac star 2000 rail saw. I'll stop rambling now, thanks.