Paul,
I should preface my remarks by saying that all but 1 of my scoped FA's have the Field Grade finish, and some options including PG grips.
I know that Mark is a fan of the Lovell, and I know several other shooters who use and like them. My primary objection to it is that I have never seen one that came anywhere close to matching the color of the FA finish, either PG or FG. It's a darker gray. Now, to some, that is of no consequence...but it would annoy me every time I saw it, if I owned it...so I don't.
I've also never been a fan of the Leupold FA base and rings, for several reasons...not the least of which is that the darned things are yellow, when compared to the FA finish.
That leaves the T'SOB, and I don't have anything but good to say about them. I've used them on many Contenders, Encores, a Savage Striker, and several FA's, in some very heavy calibers. I like the fact that I can use 3 or 4 rings on heavy kickers if I choose (scope flex is real, and is the primary cause of many scope failures...extra rings help prevent that). The T'SOB finish is close enough to that of the FA to satisfy me. I've also never seen nor heard of a T'SOB failing.
Generally, in recent years I have not used JD's rings with the T'SOB base. There's nothing wrong with them, certainly, but I have been opting for the Leupold silver vertically split rings instead. They match the FA FG finish reasonably well.
Now here's the answer to your question about my preferred FA mount: It WOULD be the T'SOB, but I actually have more custom bases in service on FA's made by my friend Gordon Logan of Taylorsville, N.C., than anything else. They're a little bit taller than a T'SOB, and the ring mounting cross cuts are placed to accomodate the particular scope that I want to use on that gun. There aren't any extra cross cuts, and the placement of the cuts is evenly spaced in those situations where I want to use 4 rings, for example. I think that not having any unused crosscuts is a big improvement in aesthetics, but once again that is a personal thing which is not as important to many people as it is to me.
I have not used the Weigand, nor have any of my acquaintances, but I don't know any reason why it would be unsatisfactory.