I have been using Models Own's 5 in 1 Top and Base Coat quite a lot recently to test it out. I really like using it as a base coat. It glides on smoothly and provides a good base for your polish. The brush is pretty decent and its a 14ml bottle so it should last you a good while before it runs out. I would recommend it as a base coat. I think it is meant to strengthen your nails too but I can't say I've noticed any difference in my nails.
As a top coat it applies really nicely but takes a while to dry. It remains quite tacky for a couple of hours but once dry it does ok as far as top coats go. I would use this top coat if my Revlon or my Barry M top coats ran out.
Have your tried Models Own's 5 in 1 top coat? What do you think of it?