I have a cheap butner type reamer now; it's flimsy and I think the rivets are on the verge of letting go. I want to upgrade to a better one and am wondering which is better as there are several to choose from. Seems that the butners are suited more for "V" shaped bowls and most of what I have are more cylindrical. I've been thing a Senior reamer but the Castleford might be a good choice, too? There are proably others I don't even know of, too, so I'm looking for suggestions and whys please.