Plane Sailing
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Barbariansdmb said:And while it seems like people like Barbarians, I don't know if flying into a Rage really fits the character concept I had in mind. He's more of an aspiring knight, or a solo adventurer righting wrongs,
I only mentioned barbarian because of the DR synergy - which is something that would be extremely valuable if you want to be a damage soak

The barbarian gets DR 1/- at 7th level and then that increases by 1 each 3 levels after that. The PHB and DMG gives broad brush stroke information about customising character classes to make them closer to what you want.
Why not talk with your DM about the possibility of incorporating the Barbarians DR (your PC is accentuating the "tough guy" aspect) at the price of some of your bonus feats?
i.e. your fighter looks like this
6th Bonus feat
7th DR 1/-
8th (loses his bonus feat)
9th
10th DR 2/- (loses his bonus feat)
11th
12th Bonus feat
13th DR 3/-
14th (loses his bonus feat)
15th
16th DR 4/- (loses his bonus feat)
17th
18th Bonus feat
19th DR 5/-
20th Bonus feat
So over his lifetime he gets 4 less bonus feats but gains useful DR.
(since *all* the fighter gets to trade is bonus feats, compared to the barbarians rage, fast movement, trap sense, bigger HD, more skill points etc, it might even be possible to merely lose feats at the levels where DR coincides - at 10th and 16th, plus losing the bonus feat at 6th in order to "prepare" him for this series of benefits)
It is up to you and your DM, but as a Dm I think I'd be prepared to allow a fighter to gain the barbarian DR by sacrificing his bonus feats at 6th, 10th and 14th level.
Cheers