What Size trimmers do you guys run? Base model smaller units (Echo SRM-210) or larger more powerful units (Echo srm-261)? I am looking for responses just for standard trimming/edging applications. I am not looking to put a blade on or anything like that. Currently I am running an Echo SRM-210 and a Shindaiwa T-20 as a back-up. I am considering getting a SRM-230 or a similar sized Shindaiwa or Redmax for the spring. Are the bigger trimmers worth it for just basic work? Those who run multiple sizes, how much if any time savings do you notice?