Having owned both the TC 24 and TC 255 my advice is to forget the TC 24 if you want a cruising boat. The TC 255 fixes all of the shortcomings of the TC 24. If you only want to fish and use the boat as a day tripper, then the TC 24 is OK.
We owned a CD 22 Angler for 13 years and loved the boat. We used it for weekends at Lake Powell or day trips to local lakes. We trailered it to Cabo San Lucas in 2002 and spent the winter there. Mostly near shore and off shore day trip fishing. Usually 3 or 4 people aboard. We traded trips with a friend who owned a Skipjack 25'. There was a definite difference in the big water capability of the CD 22 and the Skipjack 25.
Back at home I began looking for a bigger and more capable trailer boat. I had looked at ads for the TomCat 24 in Trailer Boats Magazine. Web surfing for TomCat 24's I found one for sale at EQ Sales. Dusty's boat. Birdman had already made a deal to buy it, so Les found a TomCat 24 that the factory was taking back from a dealership in the SF Bay area. We made a deal and bought the boat unseen. A mistake, but living in Utah boat shopping is limited.
There are shortcomings to the TomCat 24 we regretted.
The EZ Loader trailer was difficult at best and often impossible to use, but that's a topic for another post.
The sloping windshield. We were constantly bumping our head, and it was hot in any sun. Salt water splashes dried to a white haze immediately.
The head in a hole, under the helm with a fabric door. If you are tall you can't get in and out, and the fabric door gives no privacy. Also no shower at all.
The short cabin roof, restricts what you can carry up there.
This boat had numerous quality issues. It was the first TomCat that Reynolds C-Dory had built. We had many opportunities to discuss the TomCat 24 with the C-Dory factory, and had a lot of input into what would make it a better boat if they decided to redesign it.
We did spend the next winter back in Cabo San Lucas, with the TomCat 24. Yes it's a much more capable offshore boat. We frequently went as far as 65 miles out, chasing Yellowfin Tuna.
We received the 5th Tomcat TC255 that was built. Thanks to Jeff Messmer, we traded in the TomCat 24 for a TC255.
The new EZ Loader trailer fixes all of the problems of the old trailer design.
The cabin is essentially the same cabin as the CD 25, but on the same level as the cockpit. No stepping down as in the CD25'. The cabin is 30" longer than on the TomCat 24. The berth is the same as it was on the TomCat 24, that is, it's a full queen plus. Sleeping crosswise, no "V" berth. The head is in the rear starboard cabin corner with a shower. No crawling into a hole to use the head, and a real door. The cabin top is large enough to carry a dingy, or kayaks or whatever. We have 6 solar panels up there. The cockpit is 30" longer than on the TomCat 24, plus the motors are on the Armstrong bracket instead of having a motorwell. The real gained space in the TC255 vs the Tomcat 24 is almost 4' of useable length. With only an actual 1' 5" in hull length difference.
I didn't keep very good fuel consumption records on the TomCat 24'. It had twin Johnson 140 HP, 4 Strokes. Plenty of power and speed. The TC 255 has twin Honda 135's. We have FloScan, TwinScan gauges, and can reliably get 2.2 to 2.5 MPG. Up to 6 MPG if we cruise at 5 MPH on one motor at a time. We have lived on the boat for up to 3 months at a time, in Canada and also in the Florida Keys.
We have trailered the boat from Utah to Seattle to the Florida Keys, and back and forth many times. Probably more than 40,000 miles. Yes it requires a 3/4 ton truck, but not necessarily a diesel. I have a 1 ton diesel, but also I was carrying a 4,000 lb Lance camper. I don't own the camper anymore. We now use the TomCat as the camper on the road. The next truck will be a 3/4 ton, maybe even a gas motor.
I can't comment on the CD 25, other than to say that we cruised with "Wild Blue" for many weeks, and enjoyed being on both boats.