I'm on the 4th season with the 48DA and there is no desire to go bigger. It is very spacious inside and out.
I would shy away from the Zeus boats because the hull was not originally designed for Zeus. The v-drives and a bow thruster can replicate any motion a Zeus drive can do for this hull. It has to be one of the easiest boats to handle at the dock. So, you get no real gain in efficiency or performance, but add all the complexity, maintenance, and cost. The Cummins QSCs are durable and easy to get serviced. If I were you, I would not eliminate 2005-2007 boats in your search. There is no difference in design. With a newer boat, you get an extra set of grab bars on the arch, digital throttle and shift, maybe newer electronics, and that's it.a 2005-2006 will save you $100,000+ over a 2008, with no downside if the boat was well maintained.
I cruise burning 42 GPH at 24 knots, running at 80% load on the engines.
I love the hydraulic platform, but if I couldn't find a boat without one, it would not be a deal breaker. Try to get it.
I have a Magnum electric grill over the cockpit fridge. It's the next best thing to a built in.
Teak or Flexiteak, you will not regret it. It makes the look of the boat and eliminates all the carpet woes.
They did not build a lot of the 48s, so the resale tends to be better than some of the other production Sea Rays. The newer the boat, the more of a hit you are going to take on resale. They tend to bottom out at the high $300,000s and low $400,000s, depending on condition.