Issey is a fine scent. I wore it for years and still wear it on occasion. The issue that comes up with some of the scents like Issey and Aqua di Gio is that they are so popular you don't feel like you stand out. I've noticed that both Issey and AdG sell so well, their gimmick is now to come up with novel packaging, like Issey bottles in faux concrete or wood. Many people in here do not like the modern, lighter aquatic frags. It's all opinion and taste.
Poke around in here awhile and give us a little more input about what you're looking for- light; modern; masculine; mature; dark; heavy.
Do you want it to project or stay close to skin?
Also: budgetary concerns. Some of the suggestions will be super pricey if we don't know what kind of change you're looking to lay out. You're looking at Creeds, so I think we can presume thrift is not your primary concern.
Are you looking for a couple of scents? Just one "go to" scent? Is scent for work, play or does it need to be versatile enough for both.
Sorry to pepper you with questions, but give us a bit more to go on.
There's a ton of frags out there and ton of opinions in here.
Green Irish Tweed is a rock solid choice for sure. It is often compared to the much, much more reasonably priced Cool Water, but it is worth its extra cost imo. Debates about this can rage.
Polo is great scent too. Problem I have with that one is that it was the Aqua di Gio or Issey of its day, and I fear it would conjure up too many memories for people.