Welcome to the forum Lou . There's getting to be a lot of members here knowledgeable regarding cnc's , and now that you've introduced yourself , it wouldn't hurt to post this question in the CNC thread area
Btw Lou , you may want to be more specific, like what size of cutting area your after , budget etc.
Do you want a turn key system, or are you interested in assembling a kit .
In my case , I suspect I'm going to buy a 4'x4' Pro model from cncrouterparts.com
One bonus about CNCrouterparts parts , you can expand it to a larger size at a later date if you choose . They changed from V bearings to 20mm linear rail last year with no cost increase , so that's a real bonus .
http://www.cncrouterparts.com/pro-cnc-machine-kits-c-47_54.html?osCsid=bfstdckc4hrqb1kc9en08bndd5
Popular here is
http://www.probotix.com if you want a turn key solution.
This is a pretty good bang for the buck from what I've researched , and there's a member here with a 4'x2' Saturn , and is very happy with its performance. It's a beast !
The pictures have not been updated , as the gantry is now steel instead of t-slot extruded aluminum .
https://www.finelineautomation.com/t/saturn-series-cnc-machines
Not happy with the QC , but maybe it's improving ?