WinISD says for ported box;

2245 = 7.7 cubic feet, 30hz, 95db
2241 = 10.6 cubic feet, 35hz, 98db

but, in a sealed box, both have the same box
size for q = 0.7 and 2245 f3's 10hz lower
while 2241 has 3db more sensitivity.

#1 Is there a correlation between a woofers x-max rating and
"tight bass" ? if you know what I mean (loose suspension and tight
suspension). Do "tight coned" woofers sound better than "subwoofers",
or is this just a myth?

#2 Is there a correlation between a woofers voice coil diameter and
"tight bass" and/or sound quality assuming similar woofers?
or is the voice coil just a function of power handling,
not sound quality ? ie, if JBL made a woofer with a 2" voice
coil would it sound as good/bad as the same one using a a 4" dia
voice coil ?

#3 What factors do you look at when trying to find a woofer
with a strong motor ?

Motor strength is set by magnetic flux, number of voice coil turns and amount of current passing through it. To make the motor stronger, you need the most amount of magnetic energy, the most number of turns, and the highest amount of current in the smallest space.

Mass and stiffness of the moving assembly combines with motor strength to set the electro-mechanical parameters like resonant frequency and Q.

Radiator size and excursion set displacement, which affect overall maximum power levels. Even if the motor is very powerful, if the Xmax is limited, then the total power output is limited. Making Xmax larger means making a longer coil and spreading the magnetic energy over a larger area. This tends to make the motor less efficient, but it allows it to move the diaphragm further.