What Cleaning Machine?

I've owned the NG 2.5FI, the VPI 17F and, now, the VPI Typhoon. I've not owned any other brands. In my opinion, any of the VPIs are superior to the NG which I also liked.
Records simply get cleaner and are left with a lower noise floor. The best fluid I ever used was Torumat but it is no longer available. I now use Record Research Labs and have been very satisfied with the results.

I second the VPI machines, but you may want to try the Audio Intelligent Vinyl Solutions products to clean with. They will be back on the market in a few days with supposedly the improvements of higher purity. The super wash is a little higher that the RRL, but the deep cleaner or enzymatic is lower in price than the RRL when figured by the ounce. I've used it for several years and it has worked for me better that anything else that I've tried. Their website is audiointelligent.com.

You may want to try the Record Research cleaners as well as Vinyl-Zyme with your 1.5 just to seee what it is capable of doing.

The VPI 16.5 would be a nice step up for you. I went to it from a record doctor. No comparison, the VPI is easier to use and quicker. Less time cleaning means more time listening. They show up here used all the time in the 300-400 range. New is $500 I believe.

The Loricraft is 4X the price of the VPI 16.5 but worth every penny if you can swing it. LPs become as quiet as CDs without losing any of their much loved musicality.