I mean I dug the EMB-135/45, but it's also the only jet I've flown. So to compare it to the CRJ, or DO-328 Jet, or whatever the heck there is out there is hard to do being that I've never flown them.
Of the EMB-135, -145EP/ER, -145LR and -145XR, I'd say the -135's were the most fun to fly. They were lighter on the controls and had better performance than the -145's.
That being said, I think the -145XR flew like the -145 was supposed to. The control feel was finally dialed in (I think the -145LR's flew like mack trucks) and it had more power. I think the -145XR's were the easiest to land out of the bunch, mostly because of the higher weight. The -135's were REALLY hard to grease on in my mind because of how much lighter they were (up to 10,000 lbs. lighter than a -145XR).