Sizing Advice

I wanted to get opinions on  bike size. I got sized at 57CM on the Salsa Journeyman 700 Apex. Of course, they are waaayy out on availability. So i was looking at another bike and can't decide on the 55 or 58. Geometry below. The guy at the manufacturer recommended the 55cm for my height and inseam. I am leaning towards that because the reach on the 58 is so much longer than the Salsa and I have shoulder issues from playing baseball for years.

Wondering is matching the stack and getting a shorter stem for the 58 might be better. 

Any advice is appreciated. 

Salsa 57   TTE 570 Stack 624 Reach 379
55              TTE 571 Stack 595 Reach 395
58              TTE 592 Stack 625 Reach 401

chas, Thanks for the reply. Yes TTE is Top Tube Effective (from seatpost tube to head tube.) The TTE on the Salsa 57 and Bulls 55 is 1mm difference...570 vs 571, but the stack is shorter and reach is longer on the Bulls 55cm. It seems like the Bulls is more stretched out...so I am thinking if I go with the Bulls 55 with the same Top Tube length as the Salsa 57, and maybe use a shorter, or 17 degree stem and the reach will be effectively the same as the Salsa 57cm. I am kind of on the top end of the 55 and the bottom end of the 58 for height, but the inseam they suggest puts me at the bottom end of the 55. I just don't want too much pressure on my shoulders while riding without standing up, or standing up. 

Geormetry chart below:

Yes, ultimately the only stack/reach that matters is at your handlebars – and that is highly dependent on your stem choice. 

One way to measure inseam is to put a book perpendicular to a wall, and shove it hard up into your crotch.  This give me an inseam almost 2 inches more than what I use for my jeans (for example). Or do you have a much longer torso compared leg ratio than average?

All things being equal, the smaller bike is going to be a bit more agile, while the larger bike will be a bit more stable (more endurance oriented).

How do you get a reach so different with practically the same top tube (effective)?  Is the seat tube angle that much different (if so, does that matter to you)?

chas wrote:

How do you get a reach so different with practically the same top tube (effective)?  Is the seat tube angle that much different (if so, does that matter to you)?

Those specs are from the manufacturer. I think it may be more head angle. 

Thanks for your help!!!