You can also use the google custom search engine for Bladeforums:
https://cse.google.com/cse?cx=012217165931761871935:iqyc7cbzhci
After you enter your search, you can also adjust the search based on either relevance or date.
The Reeder seems to be a popular choice for a solid grinder at a decent price.
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Here are some recent discussions from this year regarding 2x72 options:
https://www.bladeforums.com/threads/looking-for-a-good-2x72-belt-grinder.1612741/
https://www.bladeforums.com/threads/which-to-buy-outlaw-ii-bs-northridge-grinder.1603116/
About the Northridge:
https://www.bladeforums.com/threads/northridge-tool-grinder-review.1486770/
Another thread about a particular grinder:
https://www.bladeforums.com/threads/2x72-belt-grinder-review-srg-kadrmaskreations.1665435/
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If you are willing and able to, you can also build you own, and there are several different options with available plans out there, the "Polar Bear Forge" aka "Grinder in a Box (GIB) being a popular one.
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If you weren't thinking of spending that much, you can check out the craftsman 2x42 and all of the Youtube videos about modifying it to make it more knife-maker friendly. For a bit more, there is also the Coote, which is a great middle of the road grinder in either 2x72 or 2x48. The Grizzly 2x72 is another middle of the road option, but I would go with the Coote over that, especially since you can add a VFD for variable speed, or simply step-pulleys for 3-4 speed. Do some searching and reading and you'll learn a good bit about the available options and the pros and cons.
Some excellent advice that is common around here is to "Buy once, Cry once". If you're able to and are seriously interested in making knives, just save up for a bit and get a good 2x72" and skip the middle options which will eventually leave you wanting to upgrade again later on down the road. Again, the Reeder in often recommended for a quality 2x72 grinder that doesn't completely break the bank as much as some other higher end options, such as the Northridge, TW-90, and so on.
~Paul
My YoutubeChannel
... (Just some older videos of some knives I've made in the past)