Shields & Block Rates

I was curious about how shields work, and wanted to make a good shield for my fighter. Granado Espada.cc has a list of shields, but it doesn't say anything about block rates. So I decided to test things out. The following is the results.

I was told in the forum here that Undead Protector has 0 inherent block. So the table below lists the inherent block bonus of some shields I tested.

To get the total block for a veteran fighter with Agility 6, add the following to the inherent block bonus: +29 (Lv25 Back Guard), +51 (Lv25 High Guard), +55 (Lv25 The Defender), or +22 (Lv25 Stave Guard).

Some conclusions...

1. Most elite shields do not provide any extra block rate, instead their block rates are the same as normal shields within their level ranges. The only exception seems to be elite Lv84 shield, but the bonus block may be derived from its level, instead of elite status.
   
   
2. Elite shields do not provide any extra Defense Rating either.
   
   
3. Most unique shields have the same block rates, regardless of level.
   
   
4. Enhancing a shield to +5 or higher does not increase its block rate or Defense Rating.

However, I was unable to test out higher level shields, like Phantom Guard.

Shield Name	Level	DEF	Inherent Block
Reinforced Shield	36	10	2
Elite Buckler	36	12	2
Elite Iron Shield	52	15	4
Templar Guard	60	15	4
Cross Guard	68	16	4
Elite Templar Guard	68	19	4
Royal Guardian	72	17	6
Tower Shield	76	18	5
Crusader Ward	80	19	5
Royal Guardian	80	19	6
Elite Royal Guardian	84	22	12
Cumulonimbus	100	12	8
Pollux Guard [Unique]	40	11	0
Castor Guard [Unique]	40	11	0
Elemental Protector [Unique]	44	13	0
Beast Protector [Unique]	60	16	0
Golem Protector [Unique]	76	20	0
Undead Protector [Unique]	92	23	0
Skullic Guard [Unique]	96	22	7