Depreciation is worse on camper trailers then on cars or trucks. So if going new, you need to buy as cheap as possible. This holds up with used rigs too - some people pay too much when buying new, then want way too much when they go to sell it as used.
I bought new from a so-called high volume wholesale dealer. I paid approx 35 percent under MSRP. IMHO, you MUST do this if buying new. This will also make it easier for you to sell when that day comes too.
FYI - I bought from Holmans in Batavia, Ohio. I initially emailed them and one of their salesmen replied. I then picked out the make, model, and options I wanted, then emailed back my choices and they replied with a quote. I had them order it, drove up from Florida to get it, did a PDI and stayed hooked up in their lot for a few days, and then camped my way back to Florida. I full time in it now.
There are other 'wholesale' dealers and if you post a thread asking, you will get other responses. Also, you can do a search as this has been discussed before.
I also financed mine because interest rates are so low. And the interest will most likely be deductible on your taxes as a 'second home'. You can get long terms but remember about the depreciation hit. That's why you gotta buy it as cheap as you can.