im needing a stronger trimmer than my srm 225(which I love) im thinking the srm 266 or 280 will do the job but would consider the equivalent in a stihl. it will be used in thick bar ditches and cleaning fence rows. im wanting to stick to 2stroke, no 4stroke or 4mix.whats yals opinions on these, also how do the bike handles do? I would like to take off the guard an run with about 20" of string. thanks