I have a RT7D5JTW Dell Quiet Key as well, I've been using it as my only keyboard for over 12 years easily. It has a great, quality feel, and I've gamed like a pro on it for a long time. However, it has gotten to the point where it has gotten really bad. It degraded so slowly it was hard to recognize. I would love to try and find a new unused one on ebay to replace it, or I have been thinking about trying a mechanical. The problem with the mechanicals from the perspective of a quality dome user, is that they are all rather light with nowhere near as much tactility as the QK.