The 07 is as nice as my 08. As far as piling up hours on these boats, it really takes alot more than you think to increase the hours. I thought I ran the heck out of mine last summer. We were out on it every week, and only added about 35 hours to it for the whole summer. Hours add up slowly on these bulletproof engines.
As for the 2008's "estimate" of hours, do not believe anyone one way or the other, until you obtain the actual number on a computer read of the engines. I bought my 08 last year with an estimate of 50 hours on it. I didn't inspect the boat personally, just had a friend who lived local to the boat in NC stop by and take a look. The friend knew nothing about boats but said cosmetically it was a 12 out of 10. Based upon my conversations with the owner (board member on the other board) I fed-exed a check for full price that day. Only problem was he lied about the hours. When I pulled the info, it had only 26 hours on it. I would have bought it with 300 hours on it, as it was that well cared for and still is. Point being, Captain, you are comparing apples to oranges. Julian had the accurate analysis. However, you have to do what the boss says, many of us understand that. But if 20K give or take a grand is the range, you will hit a grand slam on the one at Bayside. I'd still walk in with 20K cash in a brief case and see what they say. The price is probably the best in the east at the moment, considering the A plus condition. It certainly is much less expensive when compared to the "asking" prices on boat trader for a similar year.
http://www.boattrader.com/browse/make/yamaha/sx230
oodle
http://boats.oodle.com/yamaha-sx/for-sale/length_23/
Keep looking. When one hits, you have to jump. It took me about 8 months of searching for the SX I wanted and when I saw it? End game.
That's why I'd still consider # 3 above. As many have advised, this is one heck of a deal for this particular boat. The hours are nothing on these engines. It might be awhile before another one pops up in the area, as nice as this one is for this price.
Tell your wife the boat itself may have 230 hours on the hull, but it was taken care of so this means nothing. As evidence? Here is a photo of my 2001 LS2000, 12 years old, the week I sold it last summer. This boat had hundreds of hours on it, and a blown engine to boot in 2006 (good old oil line failure we knew nothing about way back when.....) So the actual chronological age means nothing, if the boat was cared for.
As example, remember the 210 you asked about in your first post? You said it was dirty and had corrosion from lack of use. Wrong. It was dirty and corroded (AND HAD "ONLY" 90 HOURS ON IT!) because the owner didn't give a crap about taking care of his baby. That LS above? 12 years old. No corrosion anywhere and extensive salt water use. (and a second starboard engine in 2006 due to an oil line failure back in 2006 which we didn't know about back then!)
Point is, when you see the right boat, it smacks you in the face. That blue 230 is in pristine condition as far as the "boat" is concerned. This, in my book, is a reflection of the care the owner placed into the entire package. Hell, he only got rid of it to upgrade to an even better Yamaha. At 21K, I am boating this Sunday. I'd advise the wife to think long and hard about passing this deal up.
Good luck with the direction you take. Keep us posted as we share in your adventure. We've all been there and (at least for me) it was nerve wracking to say the least. And that's coming from a guy who has money to burn - part of this reason is because I choose wisely!