Hello everyone, this is my 1st post here- been looking at this site for quite a while so I figured it was time to sign up. I searched on this site for information on the old Echo SRM-2301 and didn't really find any opinions on it as to how good of a machine it is and if it is even worth buying in comparison to other quality used trimmers out there. Would appreciate your input on this specific comparison: Old Echo SRM-2301 ($90.00 and 50 mile drive one way to pick up). See this link with description of condition and pics: http://tinyurl.com/cqjuusm The guy who ran the echo said that he's used Amsoil Saber Pro @ 100:1 for as long as he's used it. I asked him if he measured the compression ratio and he said no, that he just went by how it felt and he said it was "good", but he also said he can measure it and even bore scope the cylinder and piston if I want. Then there's a Stihl KM-90R FS-KM ($200.00 and 100 mile drive one way to pickup) which is said to have been used only a few times and is in near mint condition. I have used this specific Stihl model before but only with the blower attachment (which I thought was pretty good for what I needed it for at the time). I'm not really sure what to do. I do not really need a blower until next fall, but even then I can borrow one, so the trimmer aspect is all that is really a concern to me right now. Thank you for any helpful suggestions you may have.