Wait until they get into the high-teens... usually by then, every now and then there will be a pretty stable kernel...
People will say... "yeah... I am runing 2.5.18... its pretty stable"... or "I am running 2.5.22..and it runs fine.. but 2.5.23 IDE disks stopped working"..
Also, be aware usually when you want to run the "development" kernel you have to upgrade a bunch of other critical stuff like libc, gcc etc.. to the latest versions which breaks backwards compatability and makes your system unusable then by the "normal" kernel lots of times...
Its best to have a test partition, to try this on... it only takes an extra 4GB partition to slap a second linux install on your system and you can trash that at will and not affect your main linux install.