I also ran across Rough Ryders which seem to have all kinds of styles but priced too good to be true?
Rough Ryder/Rider are very good knives.
THEY ALSO HAVE A LIFETIME WARRANTY that is good if you are NOT the original purchaser.
SMKW (owner of the Rough Ryder, Marbles, (as of a few years ago) Queen (but not Schatt & Morgan), and Novelty Knife, among others, stand behind the Warranty.
I had to get two Marbles replaced under warranty, one was over 12 years old, due to a broken backspring. $6.99 full retail or less for each. I sent them an email with photos. They sent me a replacement of the same knives, postge paid. They did not want the broken knives.
You mentioned the GEC #36(?) Sunfish pattern. I don't have one, however, I do have three of the Rough Rider large Sunfish.

The acorn shield was my first. I used it to carve/whittle a piece of seasoned oak for a lock mortise on a replacement cabinet part in the sleeper of the expedited box truck I used to drive.
It
did not need sharpening during or after that task.
The white and green Zombie Nick are sleeve boards.
The stockman shown for size comparison is a pre-2004 Old Timer 8OT at 4 inches closed.
Suggestion: Forget the "Elephant Toe"/"Baby Sunfish" at 3 to 3.5 inches closed.
I had one, and everyone I've spoken to with one have the same issue: Around a "7" pull on the primary blade, and a "
HAVE to open the primary, pry the secondary up enough to get a grip with pliers or vice grips to open the pull of around "30" (on scale of 1 to 10

) on the secondary.
IMHO, the sunfish is best carried loose in the bottom of the pocket. It does
not "print" in the pocket of light weight business trousers, and because it is so tall spring to spine, can't go sideways in the pocket.
MARBLES also makes one.
As mentioned above, Rough Ryder/Rider are a fantastic way to try differen patterns without bankrupting the bank.
SUGGESTION: If possible, get new. The equal end sunfsh shown above set me back $9.⁹⁹ plus tax and free not Prime Amazon shipping, in 2011.
A guy on You Tube bought one identical to mine off the big auction site for a review a couple years ago.
He bragged he "stole it" for "only" $60.⁰⁰ plus shipping!

Other discontined patterns have also gone up. The "A Stroke of Luck" canoe cost me under $10 (another Amazon buy with free shipping by the seller) when new. They currently sell for $20 to $25.
WHEN you decide you like a pattern, you can quote-unquote "upgrade" to a much more expensive quote-unquote "better" brand, if desired.
(BTW, regarding the 3 blade 2 spring Stockman pattern: CASE claims "Blade Rub comes with the pattern" and is not covered under their warranty. None of my ten Rough Rider/Ryder 3 blade 2 spring stockman have blade or liner rub.)
The Classic Carbon, Classic Carbon II series, and a few others come with T10 carbon steel blades.
The knives with Stainless are all 440A.
All 60 odd Rough Rider/Ryder's I have, have an excellent heat treat.
They
WILL take and hold an accute 10° per side/20° inclusive edge with no "micro bevel".
I have Rough Rider/Ryder's (they changed the spelling to "R
yder" a couple years ago.) in several patterns, including Moose, Canoe, Barlow, Trapper, 4" closed and larger Stockman, "Work Knife" (like the Case "Sod Buster"), "Half Hawk/"Loom Fixer", and Marlin Spike.
All but the Stockman have a "5" pull ("same as the pull on the Victorinox Swiss Amy Knives) on all the blades.
The Stockman have a slightly lighter "Buck 301-ish" "3" to "4" pull on all the blades.
The backspring's
ONLY job is to prevent the blade from opening when not in use, anf from flopping partly closed between cust/slices when in use. The backspring does NOT "lock" the blade open. A "heavy" pull is NOT necessary.
Personally, I prefer the "light" pull of the Buck 301 and 303 to the pull on the average Swiss Army knife.
I've never had a desire to fight my knife to open it ... especially when fingers are cold and/or wet.