I have little to offer but nit-picks, I'm afraid. However, I hope it will help to advance the discussion.

Warchief wrote:

Not all dexers lose their AC and dodge bonuses for being flatfooted. Rogues have a feat which I believe they gain at 2nd level called uncanny dodge which enables them to retain their dex and dodge bonuses even if they are flatfooted.

Uncanny dodge (and Defensive Awareness) does not stop the dodge bonus (including tumble AC) from being lost -- only the dexterity bonus.

GPharaoh wrote:

SO you're saying that STR characters can't take tumble?? or can't increase their ac taking Palemaster, Shadowdancer, RDD?? They can still take Rogue/bard lvls to max tumble, just that there's a penalty for wearing heavy armor.(loose half of your tumble skill, so if you have 40tumble you only get 20 from tumble) but in a rusty set you get bonuses to tumble which comes out with 40 tumble skill still, so thats still 8ac.

Armor has no effect on the tumble skill aside from the armor check penalty. Also, the modified skill rank does not affect the tumble bonus to AC -- only base ranks do (added at level-up).

Warchief wrote:

So if you have a base 30 dex +12 for maxing it out with items will be 42 dex which is +16 ac +8 AC for tumble, +15 for the suggested armor, + 8 for boots, + 6 for helm, + 4 for haste + 10 base AC +2 if armor skin is taken and if the dexer uses a shield Drow shield for example will be +9 and +5 for the angel buff is 83 AC. which is more than a Templar Paladin without the angel buff.

You missed the natural armor (amulet) bonus.

GPharaoh wrote:

Dexers can only increase dex every 4 lvls or in epic lvls but its limited at 10feats. Str based characters can take str every 4 lvls, epic lvls which is limited at 10feats, and RDD lvls give almost 10STR.

Don't forget that RDD's gain an additional 4 AC at level 10.

GPharaoh wrote:

Dexers can only have 10AC more over Str based characters(i.e. Str based character can get 93ac without imp expertise and dexer can get 103ac without imp expertise)

I had trouble coming up with this number. Is it 12 (34 base dexterity) + 6 (modified dexterity) - 8 (armor)? If so, you left out the +1 dexterity AC possible in heavy armor.

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I came up with a table to illustrate for myself the AC advantages of a dexterity character. I hope someone may find it useful.

If I made any noticeable errors, please point them out.

(I purposely left out the Monk AC bonus as I feel it would distort the data -- Monks fit in their own separate category.)

Strength		Dexterity		Dexterity AC Advantage
Description	AC Amount	Description	AC Amount
Base armor class	8	Base armor class	0	-8
Dexterity modifier bonus	1	Dexterity modifier bonus1	10-12	+1-3
		Dexterity modifier bonus (bard, assassin, harper, AA)2	10-15	Special (see below)
Modified dexterity bonus	0	Modified dexterity bonus	6	+7-9
Tumble skill bonus3	4-8	Tumble skill bonus	8	7-13
Draconic Armor bonus (RDD)4	1-4	Draconic Armor bonus (RDD)	0	Special (see below)
Total				+7-13
		With bard or assassin		+7-16
		With Red Dragon Disciple		+3-12
		With Red Dragon Disciple versus bard, assassin, HS, or AA		+3-15

Notes:
1. Assuming minimum base 30 dexterity.
2. 40 base dexterity (+15 AC) is only possible if all epic feats chosen are Great Dexterity (up to Great Dexterity X).
3. Assuming at least 20 cross-class points were invested in Tumble. Any build that does not is not worthy of comparison.
4. Assuming that no Epic Red Dragon Disciple levels are taken. I think this is a safe assumption, as RDD is a particularly poor epic class.

Here's my opinion.

An average AC bonus of plus-ten for a dexterity-based build is not overpowered. It may be able to solo individual creatures more effectively, but it should not be able to tank as well as a warrior in full-plate. Lessen the elemental and physical resistances, and add bonuses that make the cloth-wearing player more deadly in single combat. Things like:

• Spell resistance
  
• Immunities to certain spells or spell schools (Bigby comes to mind)
  
• Skill bonuses like persuade, taunt, tumble, discipline, hide, and move silently
  
• Feat bonuses like Dodge, Improved Evasion, Slippery Mind, Expertise, Whirlwind, HiPS, Improved Initiative, Self-Concealment, and Knockdown
  
• Saving-throw bonuses
  
• Spell-ability bonuses like True-Strike, Improved Invisibility, Gust of Wind, Greater Dispel Magic, Great Thunderclap, Protection from Spells, and Expeditious Retreat

I'm sure there's more that could be added, but I'm not thinking of it.

hmm..good idea's, i will change some of the stuff

thanks