Armor class

I am fairly new to GW.

I have a R/ELE and he has Tyrian armor with an armor class of 70. How much better will the armor get?

Thanks

No, it wont get better, 70 is the maxed for Ranger

What is this 15k armor I hear about?

More expensive, but you pay for the looks in the case of 15k armor, the stats are the same as the cheaper counterpart.

I bought 3 peices of 15k as i thought they were better when i was new but they are for after you have done everything and want to waste money

For more information see here http://wiki.guildwars.com/wiki/Armor and follow the links. It's very helpful, and has pictures!!