That’s right, but you’re almost guaranteed to pay full price.
Personally, I jump straight from a climbing saw to a 25 or longer. I like standing up and not bending over. It’s probably a bad idea to get of your knees running a chainsaw in small wood, because, well, kickbacks and injury. Stooping over sucks, and it’s really hard on your back.
I’m five and a half feet tall (168 cm or so) with short arms. A 28 on a 461 will come pretty much to my foot level with my arms extended if I hold the saw vertical and my arms slightly out. So I can limb standing straight up without having to worry about running the saw into the dirt. My six-four (193 cm for the metric fanboys) buddy likes a 32 on a 461. Neither of us is a particularly musclebound human being, with me at the 160 lb mark and my buddy at 195. Admittedly, we’re both used to working but the 195 pound dude has about all he wants moving 100 lb repeatedly.
I guess what I’m trying to get at here is that keeping a good posture will more than offset the weight difference. But, again, it’s up to you.