The MicroMark is probably the best of the 7X lathes.
Keep in mind. However, that they are all the same...Harbor Freight, Cummins, Homier, Grizzly, etc.
They are all made with the exact same parts, just distributed differently, and a few bells and whistles added in.
The MicroMark has the most bells and whistles with a tachometer and a cam locking tailstock.
The tach means very little to me, but the cam locking tailstock is wonderful. The alternative is to have a wrench on hand at all times and tightening the nut to lock the tailstock.
However, the micromark is also much more expensive. You could probably buy the Grizzly, and then buy a cam-locking tailstock seperately at LittleMachineShop.com for cheaper than the Micromark.
You can do lots and lots of reading here...
http://www.mini-lathe.com/
This is far and away the best 7x lathe site out there...my opinion.
Whatever you do, definitely go with the longer 14" bed. You need every inch of it.