I used an HP41C for many years (replacing an HP55). I found it had a better key feel than later models. I bought an HP28S at some point but I never much cared for it and, to tell the truth, didn't need a graphing calculator at that point anyway.

I only used a TI for one year in college. This was during the period when calculator prices were dropping very quickly and between entering college and becoming a sophomore HP prices dropped to something relatively affordable and I never looked back.

It doesn't have the key feel obviously but I use an HP41 emulator on my iPhone.