I have two VPS in different configuration at Contabo. Pricing is as far as I remember pretty stable, no surprises so far after half or a full year. I can't complain about stability or uptime. Those VPS aren't in use by me for crypto coins/nodes or steady heavy load tasks, though I've stressed one of them for two or three weeks to the max. No big deal with that.

My experience so far with VPS at Contabo is good. They are quite affordable and at least for me no bad pick.
I don't work for Contabo nor am I paid by them to advertise their products. I'm just a satisfied customer.