Everyone has different preferences, my arsenal is:
Daiwa sealines 30, 50
Cheap and indestructable. Great for tossing the iron and yoyo. Probably the best all around choice for cheap.
Shimano TLD 15
Cheap, really easy to take apart and clean. Great for trolling live baits and plugs. No problems in a year of constant use, except for the sand injection in baja

.
Avet JX 6/3
expensive. more reel than you need for kayak fishing. The shift button gets a little sticky. I have not had any problems with mine after constant use since February. Great for yoyo and trolling a plug.
Penn 500 and Penn 4/0
Didn't do so well with kayak abuse. The 4/0 did better.
What ever reel you pick, don't dunk them. Don't dump in the surf. When you do launch and land have the drags tight so water doesn't get into them if they get splashed in the surf zone.