Digital Boost gauge

i want a digital boost gauage for my supercharger. I want it to be small and be able to mount it almost anywhere. Im kinda leaning towards a square one. I found one here, but its kinda expensive for such a small object.

http://www.speedshop.org/store/scripts/prodView.asp?idproduct=20
that one is 159 bucks!!

http://www.dakotadigital.com/Detail.cfm/-/Category=166/PartNumber=SLX-09-3/product.htm
this ones 90 bucks, but its round. . .

so if you know of any other ones, please tell me!

http://store.summitracing.com/default.asp?target=esearch.asp&N=110&Ntk=KeywordSearch&Ntt=nordskog&x=0&y=0 $60 + sending unit, also round, also available in green