Depending on what you wanna carry the 325 is a GREAT option. It has a garage that doesn't completely take over the RV the way the GS Bounty Hunter or the Thor Outlaw do (love the juxtaposition). If you like to putter in the garage you want one of those. If you just wanna carry a random amount of large stuff with you, but not a car, get the 325. I have been shopping for one for almost 3 years, casually, but when one shows up, Google lets me know. I have seen only 1 in all that time and although Google let me know the DAY it was posted, it was gone when I went to look.
Like previously posted on the other
RV Forum, Gulf Stream doesn't support MHs anymore, but they built their motorhomes with generic parts that are SUPER easy to replace, they are not much for the fit and finish, but you can get a real bargain buying Gulf Stream, I like them a lot for that reason. Although, you might not get much back when you go to sell.
Also, the front engine diesel is the worst of both worlds. Diesel is expensive to repair and the noise is upfront when you are driving. It isn't a deal breaker though.
There are also other similar options if you cannot find the 325, the Travel Supreme ME (for mid-engine), this one is also a below the bed design, but you can actually fit a small car in. And the bed is king size to get all that space below. Does make making the bed a little more difficult than in the GS. And the price of the Supreme is definitely that you would expect from that word. They were made from 2004 to 2008 so a little older than the 2008 to 2010 325s. Also in 2010 Monaco started a quick adventure (2 years) into making fuel efficient but attractive RVs and they made the (also FrED) Vesta/HR Trip. A 32 foot model got great fuel economy for an RV (14 MPG) and had a giant trunk that could handle everything but a whole other vehicle. So not a garage to fiddle in, nor even a small one to keep some motorcycles in, but a HUGE area you can bring everything with you and access from the outside instead of some of that space being inside the RV under the bed.
The Thor is quite successful, they have been making the Outlaw since 2007, with a gas motor instead of the expensive to maintain diesel. LOTS of space in back and if you don't mind the cramped interior quarters, sleeping above the garage, having that much fun space to define what you want to do can be amazing. This year they optioned the garage into a master bedroom and the ramp into an outdoor patio, it's a dreamy setup, unless you will miss the storage. A friend has the outlaw and did the conversion of the garage to a master bedroom herself, but then can remove that furniture at will and put a car in. Lots of them have the washer dryer in the garage, the way god intended. But having a real motorhome interior, like the three I mentioned, that just happen to have huge storage that comes up thru the floor and becomes the platform for the bed is VERY nice.
Good luck.
-Randy