I haven't ran a 241 or the 261(newest version). The older 261 is a good saw but I'd take a 361 over it.
With your 361 and 461, you should be looking for something smaller. I have a couple rear handle 200's w/ 14" b&c that are killer for limbs and small bucking jobs, the ported one is insane. Finding one of those in good shape for a decent price will be tough, I've been told the newest version of the 201 is a good saw.
Maybe look at the 20" Stihl ES lightweight bar for your 361. Might give you enough weight savings to run it longer. I plan on getting one soon, love my 28" on the ported 440.