The way a hot tub "feels" to you is 50% of the equation, but the other 50% is indeed the dealer. Marquis is an excellent brand with a stellar reputation (no- I do not work for them so you know that I say that in earnest) so that part of your issue is covered. Though I am unfamiliar with your specific previous experience, if your salesperson wasn't as knowledgeable of friendly but they have good enough reviews online for delivery, service, you may still be in business, since the other salesperson squared you away.
Sorry you had a bad experience with a salesperson. I hope it just wasn't his day- Maybe try a second attempt to see if there is someone else who can assist you?
Good luck moving forward.