The total would be a good one for limbing. I have a 16x3/8 I run on my 254/555 for bucking medium sized logs up, it's a lot of fun. I would say the 16" in 3/8 SC would be a good if you do a lot of dirty wood. I get a good amount of logs and don't cut in the woods as much as I used to, so I have bunch of 70cc saws and have sold a lot of my 50cc saws.
I know the feeling on the cash part all to well, as I said I'm cheap. I have a 241 with a 16" a 201 rear handle with a 14", 200 rear handle with a 14", and a 192t with a 14"(prefer a 12", but the extra reach is nice), and they all have the picco on them. But I have so many 325 chains it's a shame to not use them, but I'll never run out and get to buy picco chain. I'd gladly buy the picco over 325, but I haven't paid for a chain in many yrs as I get plenty with the saws I buy and sell, just not as many of the picco
. Even cutting dirty wood I run picco, I just use a lot of bore cuts to avoid pulling dirt thru the cut and I don't have much problem keeping chains sharp. I'm very impressed with how long it holds and edge for such a small cutter.
Here's the 254 I've been having a lot of fun running lately doing a bore cut in a dirty piece of wood. We were talking about it in another forum so I did a quick video. There was a bunch of mud caked into the bark on the top side so this is how I dealt with it.