I will be in Amersfoort at least once so I'll likely make a stop at Amersfoort Privehuis - anything new in Amersfoort that is better?
I'd rate Amersfoort Prive about equally with Huize Monique. Both are €100 per hour; both have girls that are very friendly and offer GFE, DFK, DATY, etc. at no extra cost (although not all girls do), both have nice rooms.
My experience at Amersfoort Prive is more limited as I've only visited two girls there in recent years, whereas I've visited several at Huize Monique.
If you plan to try Huize Monique, make sure to visit on a weekday, since they're closed on Saturdays and Sunday. Amersfoort Prive is open seven days a week.
Another small difference is that you get more privacy at Amersfoort Prive because they try to hide customers from each other (like Park 118 in Amsterdam - same owners!), whereas Huize Monique has a bar where all customers wait. Also, it is often a guy working as the "host" at Huize Monique, which kinda feels a bit weird to me, but it's not a deal-breaker.
Right now I mostly visit Amersfoort Prive because there's a super horny MILF girl there named Lola. She's away at the moment, but should be back by April, and I would very highly recommend a visit to her if you're don't mind a MILF. :)
Since Lola is away, I'll probably try visiting a different girl there next week; maybe I'll write a report.
There are one or two other privehuizen in Amersfoort, but I haven't tried them myself, so I can't say anything about them.
Hopefully someone else will be able to help with your other questions. :)