Hundreds in fact, starting in the 1950's with (I think) Verichrome Pan 120, then 620, then 35mm using FP3 and PanF. I started with Johnson's "Pactum" MQ developer at 1/3d, and then settled on Unitol, which I used with FP3, HP3, PanF, Adox (the 20 ASA one), Panatomic X, Tri-X etc., etc. My early colour was Ferannia CR50 (bulk loaded) using a reversal exposure. I much prefer the chemical way... I admit I haven't developed anything since last month, but I have a couple of boxes of FP4 in 5x4 to develop this week. These days, I use Rodinal, but I have some pyro to try out.