If I'm going to get a wheel controller, I need one that has as many buttons and controls within reach and don't have to turn the wheel more than 90 degrees to turn as fast as possible.
Get a Logitech Driving Force GT, then.
As StealthClobber said, the steering sensitivity can be adjusted. But alas, you will find that 900 degrees is your best option most of the time, for maximum precision. In reality, and while it does depend on the type of car, you don't actually use more than ~120 degrees at any given moment anyway. Might have to go 180 for really tight hairpins, but otherwise if you turn the wheel too much, you're doing it wrong anyway.
Example here:
Donington Park has two tight hairpins towards the end. Even for those, I'm not turning the wheel even close to 180 degrees. In fact, I'm using a bit too much steering even now.
Now, the car in question is Lotus 79, which is an open-wheeler, formula-style car. Those do generally have faster steering racks (12:1 in this case, adjustable) than, say, a GT car would. The wheels don't turn that much either. So no, there is no real need to go full swipey-swipey 3 and a quarter, like you would have to when three-point turning a pickup in a narrow street.
Now, when looking for a DFGT, keep in mind that some people are selling it for much more than it's actually worth due to a combination of supply & demand and uneducated buyers. Don't pay more than $100 for a new one, $70 for used. Make sure to always check the condition (is the FFB working & wheel clamps on both sides, mainly).
Also, the pedals are softer than Pierre-Marc Bouchard. That's part of the charm. In other words, put a gel/squash ball under the brake pedal, there's a slot where one will fit just fine. After that, you got a decent starter set. Don't listen to people who say that wheel is not suitable/holds you back, I'm at 6k road iRating and 10k+ combined iRating (road+oval) with DFGT wheel and G25 pedals that are not exactly in new condition.
Contact me or ask here if you have more to ask. I'm more than gladly offering my assistance. Same goes for everyone else, too.
Maybe one day we can enter a HF Wild team on one of the endurance events!