Nothings ever going to top claremont because of the way he loved those characters and basically dedicated his entire life to that book but there have been plenty of good xmen stories since his original run (some even done ny claremont himself, contrary to what the internet will have you believe)
I'd love to read them. If you have specific recommendations, I'm game. I tried reading a couple of New Claremont books upon his return but found them pretty intolerable. The thing that was magical about Claremont back then - and it took me a while to appreciate it - wasn't just Chris. The entire editorial environment that CC worked in was conducive to telling strong stories that had to have somewhat logical throughlines. They kept him on track, bouncing strong story and character-centric ideas off each other, and didn't come from a history of just comic book influences. Today's writers seem to mine solely from comics and movies. Mostly.
The team of Claremont, Louise Simonson, Jim Shooter, and ANY strong artist with a sense for co-plotting was X-Men Heaven. Claremont alone could put out some really bad things, but it was the TEAMS that he worked with - pre-image - that made it all sing. CC is best when he collaborates.
New CC completely lost his sense for dialogue. Back in the day it was NEVER real, but it was sort of like Tarantino. It had a humanity and sounded real enough. When he came back, he was in full on Claremont shorthand, ie, writing stuff that he'd written before without the patience or voice that he he once had, as if he was imitating HIMSELF ("I will consume you, your will, your LIFE, Body and soul"...and shit like that over and over again) To be fair, he was already losing it by the launch of the new X-Men books and probably would've needed to be reigned in eventually, but by the time he came back fully, he was COMPLETELY gone.
You know the closest story I've read to the 'feeling' of old Claremont? Believe it or not, was Bendis' House of M stuff. I daresay that Bendis was 'inspired' by my absolute favorite X-Men story outside of the Dark Phoenix Saga, which was that X-Men/Alpha flight TPB where they fight over Loki's 'gift' of 'evolution' at the cost of losing 'magic'. It was an incredibly powerful morale story which was pretty much what House of M was all about.
The thing about old X-Men is that it wasn't about the plots as much as the relationships. It's funny because I honestly never thought of the X-men as Cyclops, Marvel Girl, Wolverine, etc...until after he left and it became this absurd soap opera. Well, moreso.
In the CC era, you really only thought about those guys as Scott, Jean, Hank, Bobby, Logan, Ororo, Kitty, etc. Like, their codenames were really just an alter ego to protect the real lives they so desperately wanted to have.
Lastly, and sorry this has turned into an essay, but the tool that CC dropped when he came back but was ESSENTIAL to him as a writer before he left, was the thought balloon. I've had this debate with several comic types and I stand firmly. Modern writers don't use and don't understand HOW to use the thought balloon. First person , as currently utilized, is strictly a narrative tool to get you from point A to B, or a place to insert humor and sarcasm.
Now, if you go back and look at the way CC used it (and some of the best Marvel writers, too) you'll see that the thought balloon informed the reader of the character's thoughts and feelings while his actions and words spoken might betray something entirely different. Comics now are too centered on being movies and television shows. We're passive audiences whereby before, we were the omniscient third person, privy to every character's insecurities. What i used to LOVE was in not only SEEING how a character beats somebody, but reading or 'listening' to how they think through each action.
This tool allowed for very effective literary weapons like dream states and dream state reactions. Anyway, I could go into a shit ton details, but blah blah....Claremont was awesome.