Gas Trimmer Question

Hi guys, I know that this isn't car related, but it is a gas related topic! :) So I have had a battery operated trimmer which I used to maintain my front yard, but it is broken, the battery is E36 M3 and I want to get something else. I was reading on the Weedeater hero that there are two types of gas trimmers (I decided to go with gas this time) But, I don't understand the 2 and 4 cycle trimmers? What is their actual difference, if you put aside the size and the weight? What about their performance, which one is better for an average shaped front yard?

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Buy once cry once.  

2-cycle requires premix gas/oil. 4-cycle uses straight gas and engine has oil in the crankcase. Depends on preference. 4-cycle is a little heavier but not significantly.

My preference is one that takes attachments. I have a large yard so gas is easier. Using different attachments mean only one motor to maintain. I've accumulated 2 string trimmers (1 curved and 1 straight), brush cutter, hedge trimmer, pole saw, edger, leaf blower and tiller.