I did my first Extract kit last week, my question is what is the big difference between extract kits and all grain brewing is the taste different? Is one cheaper than the other? Or is it just up to each brewer how they want to make the beer like a chef in a kitchen with ingredients?
I don't believe anyone is going to say that they prefer extract over AG. Not because the beer is better or worse, just that they simply won't say it.
I brewed extract for 9 or 10 years and brewed really nice beer. I switched to AG early 2013 and have brewed some really nice beer.
I think the big question to ask yourself is do you know enough about the brewing process to move to an advanced level of brewing?
Brewing extract kits will allow a new brewer to get into the hobby inexpensively. You won't need the 8 gallon stainless steel brew kettles, or the mash tun cooler, or the stainless steel conical fermenters. Just a pot large enough to boil a few gallons of water, a couple of buckets, sanitation solution, and a sheit load of bottles.
In the mean-time, you'll learn about fermentation, sanitation, etc... and, over time, you'll be able to purchase better equipment - leading you to the end goal, which is all grain brewing.... well... there really never is an end goal with a home brewer. We all want to move up to the next level (whatever that is for each of us)... but I hope you get my point.
As for extract kits. Depending on time and supply, I still brew extract kits. There are some really good ones out there. I tend to buy mini-mash (partial mash) kits. A mini-mash kit includes a small amount of grain - usually specialty grain. The grain is steeped at the beginning of the process. It adds a good bit of fresh grain flavor to the beer that you won't get without them. Still an extract kit, but with a short steeping of grains at the beginning of the process. Nothing advanced.
An AG brew day for me takes 6-8 hours from start to finish. An extract brew day is usually around 3. In the end, whichever way I go, I end up with 5 gallons of pretty tasty beer.
So to answer the question... honestly... There really is no difference in the end product. I've found that I can brew good and bad beer either way. If someone tells you that they brewed an extract beer that tasted bad, then they need to go back and check their process... or possibly their supplier. Buy a good product to start with, use a process that will result in brewing good beer, and just enjoy yourself. It's a hobby. And the product of your hobby is a cold glass of beer.