It's personal preference, but in general the 5 reel transmissive games are of certain "types"
These are my favorites
1. G+ with the free spins feature like Zeus, Rose of Cairo, etc.
2. Super Multi Progressive games like X marks the spot, hollow riches, where it has a progressive over each reel and the progressive is hit when the progressive sign is a part of a 5 reel win, you can have multiple progressive signs on a winning combination, thus earning more than one progressive win on a single spin.
3. Hot Hot Super Jackpot - a stacked symbol on the first reel, triggers respins to lock in other stacked/wild symbols. Record Jackpots is my favorite one here.
4. Max Win - Snow leopard, Panda Wins... This has mystery reels that are replaced by random stacked symbols.
Then there's the goldfish ones.
Make sure you have the correct colored index wheels for your reels. I believe everything there is orange reels, except G+ which are green ones. The Max Win games require you to offset the reels to the alternate position (there's a mechanical notch for positions 1 and 2 that need to be changed for this type of game).