I'll jump in here. kayak fishing is my thing! First my biggest suggestion to anyone wanting a kayak is to demo as many different models and brands as you possibly can. Everyone has an opinion on the "best". It's like Ford vs Chevy and everyone has their own personal preference.
The one absolute I would throw out there is a sit on top over a sit inside, you definitely want a sit on top!!
Next, If you plan on fishing lakes I would highly recommend a pedal drive of some sort, this will add to the cost of the kayak and it will ultimately depend on your budget. The pedal drive allows you to cover much more water, quicker and hands free so you can fish without needing to paddle to control your boat. Nothing to me is more aggravating than trying to fish in the wind and having to constantly set your rod down to keep your kayak in position. For this reason I have gone with a pedal drive kayak.
My personal preference when it comes to a pedal drive is the Hobie Mirage Drive kayaks, they are on the upper end of the price spectrum but you, in my opinion, get what you pay for. Canoe KY has some other brands that I would recommend you try. If you are in the Lexington area I can get with you if you'd like to demo a Hobie. I also recommend the guys at Strictly Sail Inc in Cincinnati if you go the Hobie route, I can help you with delivery of the boat.
Again, my biggest advice is to demo and try as many different models and brands as you can until you find what fits your needs the best.
If you have any questions or want to learn more please just let me know
jwallen84@gmail.com
www.jaywallenfishing.com