[telly0050]

DA 35/2.4 would be the bang of the buck to me.
it really wont make much a difference with 2.4 and 1.7, simply boost the iso one more stop, or try to hold your hand stabilized with SR on.
tamron 17-50/2.8 is another great suggestion there too, great range and great constant aperture

[crewl1]

I use either fa35 or da21 for street but probably lean to the da21 more.
Depends on what your style of shooting is.
There are some samples if you look through my street link in my signature.

[msatlas]

Since you've got the 18-135 that should suit you fine for most general outdoor daytime photos. For indoor/night/sharpness something in the 28-30mm range is probably your best bet like you've posted.

I've had both the DA 35/2.4 and FA 35/2. I prefer the FA for the faster maximum aperture, but the DA is also really good. It handles PF better but you have to really take a bad picture anyway to provoke the FA into flaring.

I also have an FA 50/1.4 but I use this more like a portrait lens. It's too long to say, take a picture of someone sitting across the table from you in a restaurant. Unless you just want a head shot.

Since you've got a bugdet of $450, you could easily pick up the DA 35/2.4 and F or FA 50/1.4 or 50/1.7. I went with the 1.4 for smoother bokeh but some folks like the 1.7 since it's a bit sharper wide open. The gap narrows if you put a hood on the 1.4 which is what I did. Brand new the DA 35/2.4 is $200 tops and you should be able to get any of the 50s used for $250 or less.

[cali92rs]

To the original poster, maybe i missed this, but what exactly is wrong with the 18-135? What is it lacking that makes you want to buy another lens?

[Deepbyrne]

To the original poster, maybe i missed this, but what exactly is wrong with the 18-135? What is it lacking that makes you want to buy another lens?

The 18-135 is a great lens, however I won't be taking a flash, so I'll need something that can handle lowlight without sending the ISO up too high - So I'll likely use the 35mm F2.4 for that + it will also be lighter if I just want to walk around with it on.
The only other thing I'm considering now is an ultra wide angle lens (Sigma 10-20, 15 LTD or the Samyang - Not sure if I can get this within my budget yet).