help choosing new engine

hey guys...i juss registered so i can get some help on this question
im deciding to buy a new engine i saw on ebay
its a NITRO STAR T-15 ENGINE
costs like 40 bucks
also im lookin at NITRO STAR 15SS ENGINE

i dont noe which one is better
the t-15 is 1.2hp but only revs til ~29k rpm
the 15ss is 0.7 but revs 33k
which one do u guys think is better

if not any of these, wat engines would u recomend that i could buy for around my 50 dollar limit on ebay?

thanx in advance

oh btw my r/c is a nitro rs4-2...running a stock 15fe

the higher the power ,the better...
i'd go with the NITRO STAR T-15 that has 1.2 hp..

if ur worrying about the powerband, juts put a taller gear to make up for the low rpm..

Hey,

I'd say go for the T-15, I've also had the 15SS in my car, and it is nothing compared to the T-15! My friend has a Associated Truck with lots of mods and a 2 Speed, and my car is a single speed and I can beat him with my car! I highly suggest the T15, it is easy to tune and very fast. Here is the link to my car, pics are a bit old but its still pretty much the same. http://www.automotiveforums.com/vbulletin/showthread.php?t=445491

If you have any more questions jus ask