I have booked Adelphi Suite and trying to figure out the best transfer from BKK. The hotel lists a few options and I am considering one of the following for afternoon arrival and evening departure:

1) Airport Express
Air-conditioned bus service which operates from 5.00am to 12.00midnight. Contact the Airport Express Counter at Level 1 near entrance 7. Take route AE3 Suvarnabhumi-Sukhumvit-Wireless. Fare is THB 150 per trip. Descend on Sukhumvit Soi 10 (Bangkok Bank), head towards Nana BTS skytrain station (200m) and take the first left onto Sukhumvit Soi 8. The hotel is 100 meters along on your right hand side. Approximately a one hour ride, depending on traffic.

2) AIRPORT RAIL LINK
Upon arrival head to the airport rail link located at the basement level of Suvarnabhumi Airport. Adelphi Suites guests are recommended to purchase the Express Line ticket to Makkasan station, where they would need to change lines & take the subway from Petchburi (MRT) to Sukhumvit (MRT) station. Here another change of line is required; take the skytrain from Asoke (BTS) station to Nana station. On arrival at Nana station take Exit no. 4, turn left at the bottom of the stairs, take the first right onto Sukhumvit Soi 8 and Adelphi Suites is about 50meters along on your right.

Which one is preferrable for a first visit to Bangkok?