John,
Welcome !
Do you want 2 post or 4 post? How much space do you have? What weight/size vehicle are you lifting?
Have you noticed that many of the cheap lifts look identical except for name/color? They are made in the same factory(?) in China. So specifying Greg Smith lifts may be misleading.
If you read through the many GJ posts on this subject , you'll find Greg Smith & Bend Pak seem to have excellent customer service. I mention this because what if your generic chinese lift needs a part/repair in 5 years time ? Many of the chinese lifts offered are just traders.distributors -they have little technical help/parts/service.
There are a bewildering number of factors to evaluate . I'll throw in one that is seldom mentioned since there are so many posts on the general issues. Code/inspection requirements. Where I live ,the installation of a 2 post lift requires several inspections by the Building Inspector. There can be disputes about required concrete thickness/strength, anchor specs., electrical ,plus he may tag you for other issues when he visits your property. By contrast, a 4 post lift requires no inspections.Just fit a plug on the electrical connection.
Others may chime in to help you more.
Welcome to GJ.