REAPER, Audacity, Kore Player, Kontakt Player, Reaktor Player, Zebra 2 demo, soundfont player, soundfonts...
Dabbling in music to see if you like it isn't like guitars where you need to buy a GOOD one right off the bat. The free stuff is more than capable.
How do you like 9 but not like 10? 10 is 9 with more features... Also, if you say "I don't feel like spending money on FL10" I am going to fall out of my chair laughing.