Thank you so much for the compliments. It really means a lot to us!
And what a great question. Overall, I'd have to say the main reason I haven't switched racquets yet is because of the amount of control I get from the nTour. I prefer control over power and it's usually harder for me to find the same level of control from racquets with similar weights; generally heavier racquets are more control-oriented. With the nTour, it's light enough to where I can get good depth and power, but also a ton of control.
With that being said, I really enjoyed playing with the newer versions since they were so similar to the nTour, but for me they just lacked some of the control the nTour provides. However I did think the newer versions were more comfortable, had better feel and were much softer on my arm, which was great.
Unfortunately, I have not had the chance to try the BLX Tour Limited racquet (I wish we had some in-stock to demo so I could give you my opinion), though after taking a look at the specifications I think this racquet will be a good compromise between the newer and older Tour racquets in terms of control and power. The Limited has a similar power level to the newer versions (most of them being medium), but is also slightly heavier than the newer Tour racquets which should help with control.
I hope this helps. If you have anymore questions, or if there's anything else you'd like to discuss, be sure to let me know. I'd be more than happy to help!