It does depend if you like comfort or tradition. I've only been to four grounds with Spurs: Wigan, Stoke, Everton and QPR, and I much preferred the second two to the first two. Even though it holds a place in my heart as my first ever away, as grounds themselves go Wigan was probably the worst. Identical on all sides, no multiple tiers mixing the look of the ground up, no real atmosphere, idiot fans doing Hitler salutes, stupidly cramped concourse for 4500 seats. Retail park setting just rid the stadium of its character as well. On the upside, it was walkable from the town centre, they gave us a huge allocation so at least our own atmosphere was rocking, and the tickets were cheap.
The best was probably QPR. Proper old-fashioned inner city football ground with a rocking atmosphere and compact enough to be really close to the pitch and have a great view. Will be going back.