Form follows function.
Decide what you want to do with the Sword, to fight other people with Swords get a Foil, or a Rapier.
For Swords you want in the general style mentioned that you want to use to fight other people with Swords, A-2 might just cut other swords in Half.
I currently lack the will to use live INFI against Live A-2 to see how they compare in real use, I stay with Foam covered to avoid the Broken Bones and Terrible Bruising I got learning with Split Bamboo and Wooden Boken.
Full speed and Full strength Practice even with Foam covered you can get hurt.
Early Rob Criswell and Early Busse swords were pretty much Sharp Clubs, Vastly Strong but slow.
Current Rob Criswell swords are much Faster and Very usable.
Current Busse swords are very usable, about the Same weight, length and Balance as those Whiffle Ball Bats covered with 6"X6" Foam rubber and covered with Nylon cloth sold as Boxing gear, cept of course the Busse is way Faster due to less air drag.
Give thought to the size and weight you are looking to use.
I taught my kids to fight with either Single blades, or one in each hand, I also worked with them using a Single blade and a shield.
We worked with every thing from Stanley Razor type Box Cutters to Claymores and Bastard Swords, as well as improvised, cutting and impact weapons.
The Busse Sword is very durable, and fun to practice Dual Weapons skills while actually striking things like Wood posts, to get the feel of resistance and Shock to your hand,wrist arm and Shoulder, as are The Rob Criswell Swords, The Criswell's are available in many different sizes and Shapes as well, each Sword Differing a bit in curve and weight.
The Busse is very Consistent and Varies from Sword to sword.
If What you want to cut is Mat, then get a Sword designed to cut mat.
I have over the last 36 years paid for and used alot of swords and now tend to stay with practical, usable, durable Swords as opposed to traditional Swords.
Criswell's are showing up in more Dojos as time wears on.
I have Bought more Criswells and Busses as Practical swords than any others.
Six Larger Criswell Swords and 3 smaller.
Ten Busse Swords, one Custom and nine current AK's
Most of these have been given away or sold.