[mlmr]

I thought the pentiums are old and going out of style. These computers have to last 5 years.

[visualops]

You're thinking of the original Pentiums. Since then we've had the PII, PIII, and most recently the P4.
As for choosing a local shop, check with BBB and ask the store for references, and check them.
I prefer "hand built" machines because they are not built to be replaced, like the factory machines.
If you want them to last, I really recommend finding a reputable local shop and have them build a machine to suit your needs.

[Tribune7]

What are you going to use it for?

[ThePythonicCow]

I thought the pentiums are old and going out of style.

Intel's current desktop processor line has three parts, from low to high: Pentium III, Celeron, and Pentium 4. Reference (for the geeks): Intel Desktop Processors.