Gaines, I was going to buy the Alpha Revo 4000, but they did not have it in stock. I ended up calling Tim at Laserfibre regarding the Eco. I've explained my situation (only two different racquets, one string job each two weeks the most) not stringing for others. Portability is also an issue, since I travel a lot. He gave me a course on fixed x flying clamps, and told me I would have no problems at all with my frames(Pro Staff Zone and Original) and flying clamps. He said that for such a low volume a machine with good flying clamps will do the job well. He ended up convincing me to go with Laserfibre - I am just deciding if it is worth paying $200 more in my case to get fixed clamps. Since you are an experienced stringer, what do you think? Thanks.