As previously stated, the Sentinel range may not be fun. It kinda depends on what gives you pleasure.
I did Slide (or maybe it was N Slide), Kilburn, Sentinel and Stewart as a dayhike in wet weather and it was one of the worst hiking days of my life. It was definitely in the top 3 most difficult bushwhacks for me.
On the east side of Kilburn heading towards Sentinel, I remember reaching into my pocket and noticing that the dense spruce had robbed my map. It happens occasionally and I prepare for it by bringing 3 copies of the map. About an hour later, still in the thick stuff, and less than 1/3 mile from the lost map, I reach for my second map, and this time I find my entire pocket (and map) are gone! My pocket had been ripped from my pants without me knowing it. I made it out on my third map that I protected with my life - literally
I later revived my pants with yards and yards of dental floss and some patch fabric. My legs were thrashed with the usual cuts. This was the only time I got open weeping legions (sp) from hiking. My hands survive because I was wearing stainless steel cut proof gloves - literaly chainmail (sp)
So if you want to do the Sentinels, have at it. By comparison, the 1/2 mile per hour travel of the Sawtooth range was a pleasant time. The typical days there were tough and slow - 12hrs for 6 miles and it felt like a constant workout. A really tough obstacle course with some mental exercize too - like "hiking chess"
Some of the other suggestions like the Jays and the area around the Dixes are much more nice. Also Nippletop and Niagara and Camels hump are quite pleasant.
Of course, your actual milage and experience may vary and past performance in no indicator of future results. Bushwhacking is inherently risk and parties engaging in this activity do so accepting the risk....