Will I get bored if I play them back to back?

I bought Xillia 2 a while ago and was about to start playing it, but then saw 1 is on sale on psn for $5. I'm considering buying it, but don't know how similar the games are etc and if I'd get burnt out.

In my opinion, there doesn't seem to be a lot of new areas to explore in Xillia 2 from Xillia 1, so going to the same places might wear on you some. Also, there is a big difference in how the parties are handled between the two games. I don't know if I want to say much more on that without spoiling anything. Maybe you already know. For these reasons, I do believe skipping to Xillia 2 would be fine.

On the other side, I feel you learn a lot about the main cast in Xillia 1 that you miss out on in Xillia 2. Please note that I don't read books or play a lot of rpg's outside of the Tales series, so each Tales Story has always at least entertained me, if not completely blew me away, so I don't mind playing through them back to back, but I can understand how it could grind on some people.

To summarize:
Pros of Playing Both:
1) Two full stories that flesh out the characters.
2) Slightly different game mechanics to check out between the two.

Cons:
1) Revisit the same areas pretty much.
2) Arte Usage doesn't carry over (this kinda bugged me for reasons).

If you are just going to play one, I personally believe Xillia 2 was better, but that is just my opinion. I hope this helps some.

Since Xillia 2 was the last great Tales game, I'd play it even though it had no airship and world map but the battle system was much better than Xillia 1 and Zestiria.

Thank you for the input I'm probably just going to play 2 since I've gotten so many games on sale lately (Dragon Age Inquisition, Ni No Kuni, the list goes on...) and I'm never going to finish any at this rate.