SIG 55X series or AK47

I was looking into the SIG lineup and Horton suggested a 552, so I got to searching and found this:

http://www.airsoftcanada.com/showthread.php?t=101962&highlight=sig+552

guy's asking $200 for a TM sig 552 and 3 lowcappers and a hicap plus a silencer so the inner barrel could actually be a respectable length

any thoughts?
I'm thinking its too small for indoor fights, supposedly this TM shoots about 250 to 280 FPS with .2's. Sure I could mod it with a silencer, longer inner barrel and upgraded spring, but maybe I should get something that would just work?

I'm also looking at http://www.airsoftcanada.com/showthread.php?t=100784&highlight=kraken+package

a standard kraken with mags, sight mount, and mag pouch ($230)

Post says SPF, it's likely gone already.

hum, I'm still leaving toward the kraken anyway xD

so it looks like I'm getting an AK