I’m probably not a good candidate to answer, because my preferences change almost as much as the weather here in the south .
I do own a couple 2000’s , they’re Daiwa LT’s , “light tough “ and the shallow spool variety.
I really couldn’t tell that much difference between using a 2000 and a 1000 as far as casting distance .
I also own several ( more than 20) 500 size reels .
I like a light reel and I’m not concerned about balance because some long rods would require a heavy ( IMO ) reel to balance them.
I prefer the light feel of the total package and it’s easier to get that with a 500 size reel .
Then again I own several (more than 20 ) 1000 size reels .
With the newer Daiwa LT’s , the weight of a 1000 is only around a half ounce more than most 500’s and I do see a slight increase in distance using the 1000 size over a 500 , that is while using light 2# line .
Oh , I forgot , I like the larger and longer handles of the 1000 and 2000’s over the smaller reels too .
See I told you I wasn’t the best to answer .