Go on multiple canoe trips a year and know your pain. For the amount of money that they want for lightweight canoes you are going to want to test paddle them before you buy. Check with rental outfits in your area, they usually upgrade and sell a portion of their canoes each year.
Canoe makers tend to be regional but these are the bigger ones in Canada;
clipper canoes https://www.clippercanoes.com/
Scott Canoes https://abitibico.ca/en/collections/canots
H2O Canoes https://h2ocanoe.com/
Swift Canoes https://swiftcanoe.com/
Sourisriver Canoes https://www.sourisriver.com/
Canoe makes and models for paddlers, are like hunting rifles and calibres for hunters. Everyone has there favorite but the 16 foot prospector design is the 30-06/.308 of canoes. It does everything, somethings really well, others not so much but it gets the job done.
I have a 16 foot prospector in Kevlar that's around 55 lbs. It has a full keel and I use it for everything but its slower on big lakes. I honestly do not like a keel on canoes but learned on keelless boats and just got use to being able to slide one around.
My other canoe is a H2O 17'6 Boundary. The thing is a dart, loves big water and being loaded to its max. It is almost useless empty in a brisk wind. It is also more nimble (IE Tippy) but rewards paddlers that know what they are doing.
Lightweight does not mean flimsy anymore. My carbon innegra canoe is 17'6, weighs 32 pounds and has been abused without mishap. Its not designed for white water but ran it from lake nippising, down the French river to Georgian bay and it did fine with the odd bump on the rocks. The fabrics and epoxy they use has come along ways from 20-30 years ago.
The price of canoes here went insane during the covid return to nature craze and have not really come back down.
Hope this helps!