I have been reading and doing research for about a month now and have decided to go with Maruyama. I found a new old stock BC2600 and wanted to compare it with the new BC2621. Both are 25.4 cc but the BC2600 has the AE260 vs the CE260. I was leaning towards the older version thinking it may be better built and run better. The unit will be used by me on a half acre lot that will be patrolled by goats. Any thoughts?