Know this is an old post, but closest to some info I've been trying to figure out. You mentioned you used a 2511 and 361P. How do you feel about the power between the two? Is the 361P noticeably stronger? I'm trying to decide between the two for my next saw purchase. Need something lite weight for limbing and slash; plus my wife wants a saw she's comfortable with. Looking at rear handles for both models.
First off, the cs2511T is tiny. Discussion & reviews mention that like a football with cutter. Maybe hard to operate safely for a beginner. Many better choices 35-40cc. Stihl 021/023, Echo cs3510/cs400, etc. Search & read reviews.
A couple cautions about what's suitable. I know that in 2022 my Echo OPE dealer was sitting on 2015 data plate cs361p. No discount from $359 MSRP on a 7 year old saw. Suspect that Echo warehouse might be old stock... don't know. Talked to a 2nd dealer, said they dumped all their cs361p at deep discount. Weren't selling.
I find the cs361p intriguing but prehaps a bit light duty in some respects. But, I recall maybe 8# pho so why. Maybe a bit goofy with front fuel & oil tank as actually just a rear handle adaptation of the Echo 355T or Shindaiwa 358T. Echo attraction is the price point.
I like the appeal of cs361p on it's merit, rear handle, small, light, reasonable power for a 14" bar. A 16" possibly a bit too much but should pull it.
Before you pursue buying a cs361p check a dealer (or friend) that your wife can pullover a cs355T. Same engine. No compression release as I recall & are quite stiff compression for 35.8cc. My dad at 89 years old considered buying cs361p but couldn't pull a demo cs355T. So, big no go. Bought an Echo cs400 that easy start & very reliable. Loves it.
Just opinion... the Echo cs3510 (8#) or old stock cs400 (10#) might be better alternative. My area Craigslist do see 2nd hand Echo cs400 frequently selling $150, or $200 in mint shape. I like that cs400 has an adjustable oiler & traditional feel in the hands. Seems durable & many reviews of performance improvement by de-catting muffler. But, runs perfectly fine in stock configuration. Many sold as 18" bar & pull surprisingly well. I'd prefer 16". Quite fun/decent saw to run if put expectation around 40cc at low cost. Also, very fuel efficient.
No information on the replacement new cs4010. Personally would pass & find NOS or used cs400 (40.2cc).