I've had the Daiwa's and Shimanos, and this year have MR3s. The MR3s are way smoother, but way more finicky.
For the price/value, I don't think you can beat the 4000/2000GT. They perform forever, no need for maintenance, no creep, just a little clunky.
The Islanders cost more, look better, and feel great fighting a fish. But the creep (for the price of the reel) is a problem. I rarely fish below 100ft, and with 4 of them in the riggers its tick...... tick...... tick..... Can be eliminated by tightening it right down, but then you have to loosen the drag when the fish hits. No need for that with the Shimanos.
Also the clicker noise on the islander is the reverse of what it should be. Loud on the retrieve, quiet on the run. I want to hear that real scream when the fish takes a run.
MR3s are a 'bling' factor, no doubt. And I'll continue to run the ones I have, but will try something different next purchase.