For what it is worth, I don't think there is any one right answer. It depends upon how you are going to use the vise (i.e. type of tying and where you want the vise placed). For me, I like a nice sturdy foundation to work from at home. Unfortunately, I also bring my vise to different locations and don't know what type of table I'll be tying on. To solve this dilemma I purchased a 5 (or 8 I don't remember) inch deep C clamp that I use at home to secure my vise to my tying table. When I travel, I just disconnect and I'm ready to go.