I have an older Rembrandt and love it! It's is very comfortable if you like a more narrow twist. Thighblocks are huge, but well placed for my leg length.
They used to be sold through Classic Saddlery in Michigan and are now called Classic Saddles. I believe they still make similar or same models at very reasonable prices. Google them for their website.
I had one and liked it for a while. Until I had to do more sitting trot. Then it caused me unbelievable crotch pain and bleeding. If you like a narrow twist then you might like it. It just didn't fit me well. The seat was deeper than I'd like and the thigh rolls weren't in the right spot for me.
Getting dusty in my tackroom. Fit me and my heart horse beautifully. He died of a heart problem 4 years ago and I'm can just now thinking about putting it up on ebay. Most comfortable saddle I ever sat in. I think I am keeping it, hoping it will fit another future horse, but 4 horses later, that hasn't happened. Neither has the feeling of a perfect fit with any other horse. I'm just glad I had the experience for 24 years no less, many people never have.
I had the Rembrandt Integra adjustable saddle and adored it! I need a wife twist and never had a problem with this model. Loved adjusting it with a key! It had a nice open seat and gusseted panels. Only sold because it was too long for my pony!
"We don't stop playing because we grow old; we grow old because we stop playing."
We have had 2. Still have 1. I had an Integra (adjustable tree and stirrup bars). Loved it, until my butt outgrew it.
DH has an Lauria. Very different feel from the Integra.
So, like any other brand, the different models feel and ride differently. I really liked my integra but hate his lauria. But same with most other brands of saddles--some models are wonderful and others not so.
So I would suggest trying the model. Just like with any other saddle you are buyng.
I have one, not sure what model it is (nothing on the plate or flaps). Mine doesn't have big blocks but it does have a deep seat. Love the narrow twist. This saddle has worked well on about as many horses as the stubben. If the one you're looking at fits you and horsey, go for it, I think these saddles are well made.
I have a Rembrandt Laurea that is 15+ years old ... I find it very comfortable and it seems to fit the majority of horses I've tried it on. It has held up pretty well over the years. It looks kind of similar in design to the Passier Grand Gilbert.