I used to own a 2003 EP3 Honda Civic Type R 30th Anniversary Edition so a different car to the Accord but there are some similarities regarding the engines with VTEC.
One important part to check with the VTEC motors is that it properly engages into VTEC. This happened on the EP3 around 6500rpm I believe it was.
There should be a noticeable increase in engine noise, acceleration and speed that the rpm's increase. If not then the car is not properly engaging VTEC.
This could be because of something as simple as not having enough oil in the engine but obviously if that is the case then that in it's self is not a good thing. It can be caused also by other things such as the car being in "limp" mode or a duff VTEC solenoid.
More info here: http://honda-tech.com/honda-prelude-4/official-%22why-vtec-doesnt-engage%22-thread-830163/
I loved my Honda and found it to be the most reliable car I have ever owned with zero faults or breakdowns in my 3+ years of ownership. Highly recommend Honda VTEC engine equipped cars for definite imo (great engines).