One of my other mostly used builds is this one. Its a tryndamere build based on AD and survivability most used by 5 vs 5 games due to the expensive items. I'll explain in detail how i use him but of course you can use it in your own way as you see fit.

update v1: Added some alternatives at the item section and some late game improvements.

For runes i decided to go for a boost in crit damage, attack and of course crit chance.
The crit chance and crit damage will be helpfull as your ability works with crits and those runes could help you gain some kills faster. The attack damage runes are commonly used for all meelee fighters so i think i'll skip their information. Of course you can switch the marks with the glyphs or seals as long as you keep having those three kinds of boosts. Find your own way of which ones work best for you.

Masteries is fairly easy to explain. The offensive points is to increase your damage, crits, ect. which is tryndamere's main style. The extra experience boost and extra gold gain are usefull for a little help with earning money passively while you level by farming minions faster. The last points i've given to my summoner spell boosts and health regeneration as we pay health for our skills.

we start of withand 2 health potions which will come in handy. Early game try to deal damage without taking unnecessary risks until you can return to base to upgrade your gloves into afor extra gold passively and more crit chance while you go for boots next. I usually pick boots with tenacityto lower stuns, slows ect. but if the enemy team has no stunners then i'd takenow we return to the field to help our partner as we can take slightly more risks now but remember to stay alert. if your team has the upper hand and you earn gold more easily you can rush yourif not then go for theto give yourself some lifelink and more crits. Either way your survivability should be more now that you got your ulti and lifesteal. Depending on the money you now go either for aor you rush yourNow depending on your previous choice you go for the other one. Now your critical chance should be near 100% and your crits should deal around 600 damage each or more making tryndamere a high target to defeat first in ganks. Since you know they'll target you make sure you use it to your advantage by taking the lead with your team as back-up. If they target you they probably use all disables already on you making them vulnerable to your teams counter attack while you stay alive due to your ulti and with your attacks dealing enough damage to heal you fast with lifesteal you can chase them soon enough with your team or you can run away letting your team finish them off. After some ganks you probably should have eaned enough to get yourfor increased damage and lifesteal. With this your build is as good as complete leaving room for one more item to upgrade, namely your avarice blade into afor more armor penetration and cooldowns aswell as an extra speed boost if needed. If the game keeps going on you can always change the executioner's calling into anotherfor more damage and lifesteal.

ghost: I would prefer ghost over flash as you will have more time to chase your oppenents when they flee or when you have to escape giving you more survivability.

exhaust: can be changed into ignite if wanted but i use exhaust early game or when fighting another dps/ad champ to give me an extra advantage but it is your choice.

Other possible spells: cleanse, flash, ignite

pro's:
- very strong AD
- usefull to destroy turrets due to his ulti
- perfect decoy in team fights
- high survivability
con's:
- weak early game
- uses health for abilities
- has one big weakness (thorn armor)
- usually targetted first in ganks

Well i hope you find my build usefull, i haven't made alot of them yet so all advise and feedback is welcome.