It was or It is + present perfect

[df2006]

Is there any difference in meaning between the following two sentences?

1) It was the best experience I have had in my life.
2) It is the best experience I have had in my life.

Thanks

[2006]

Is there any difference in meaning between the following two sentences?
You don't have to use present perfect tense.
1) It was the best experience I (have) had in my life. talking about a past experience
2) It is the best experience I (have) had in my life. could be talking about the present or the past

Thanks

2006