I wish everyone would say if they were married, single, divorced..... You know, because it makes armchair analyzing sooooo much easier!
it really will depend on the relationship. I've been married for 18y5m (but whose counting?). We had a healthy way of dealing with finances for awhile, but when things switched to him being the sole provider so i could stay home with the kids, his attitude changed to "his money" and the rest of us be damned. His parents have the "my money" thing going on, and I hear some really unhealthy stuff from them. As in, "you owe me $15 because i bought your dinner." In their case they don't have a joint account at all.
How is this healthy in a relationship? It is indicative in a variety of problems i see in their relationship, and what developed in mine. My "husband" can't see/hear that in his case with a wife and 3 kids that maybe family should come first. What works 1/2 way for his parents is because they are in their late 60's and retired.
Anything can be made to work if their is healthy respect for all parties involved.
I would say you have it backwards..... That a fixed amount for personal spending to each partner is better. Because if you are "getting" 7k to spend a month and your partner is only left with $200, it's going to get ugly over time.
It just depends on the family makeup and the parties involved.
I'm pretty sure most of you would find me a cheap wife.

Throw some tech at me 1-2x a year and I'm good to go, well, as long as i have enough to get a haircut and feed my comfy shoe fetish every so often.
But again, everyone shouldn't be so quick to judge the OP and others for what works in their relationship. Give them mega kudos for having the ability to communicate on the subject.....