I have a Powell Max 683 MH EF rated 1/4-3/4 oz, with a line weight of 10-17 lb. I want to get either an *** or an LTB that is similar to this rod. The *** 6'7" MH is very similar, however it is rated 3/8-1 oz and 12-20 lb line. The 6'8" LTB is the same way. I was thinking about dropping down a power, but I felt the Medium *** and it did not seem like it had enough backbone. Should I stop overthinking and get the MH? (Now I'll have to decide which brand..)

I'd get a MH, work many hevier summertime baits(actually a Heavy to XHeavy is best for:) like Punching, Jigs, Frogs, Swimbaits and any other heavy baits you would throw this time of year.

I'd get a MH, work many hevier summertime baits(actually a Heavy to XHeavy is best for:) like Punching, Jigs, Frogs, Swimbaits and any other heavy baits you would throw this time of year.

 

I throw 3/8 oz jigs, but I also wonder how the tip is on the LTB for casting weightless senkos. I know that the MH *** has the same tip as the M, but just more backbone.

The MH LTB is going to be heavier than the MH Powell Max.  I don't know about the ***.  If you want something similar to what you have, get a M in the LTB.

The MH LTB is going to be heavier than the MH Powell Max. I don't know about the ***. If you want something similar to what you have, get a M in the LTB.

I'll go see if they have a M LTB and handle that

The terms used to describe rod power and action are completely subjective. Lure weight ratings are as well, but at least there is a value in oz. associated. St Croix's idea of M, MH etc tends to run on the heavier side as you've seen. Don't get too hung up on a single labeled power value.