What do you think would be the best Shimano baitcaster for small (4") Senko's?  A Calcutta TE 101 or TE 51?  Thanks.

I've not casted either of the reels, but both should be able to handle a 4" senko; the salty senko is pretty heavy.  If line capacity is not an issue, or if you use braid, give the 51 a shot.  The fun factor on small reels is through the roof.  

If you are looking for more of an all-around reel, go with the 101.