Stable version HP SIM?

[SebastianT]

I am still on HP SIM 5.1 and looking to rebuild since it is having slowness issues. It takes about 5 min for the SIM page to load in IE.
Reading through the threads I see a lot of people complaining of issues with HP SIM 5.3 even with the hot fix.
I am reading threads where others state that 5.2 being more stable.
Which do you think is a stable version and would recommend going to next?

[Paul_627]

I am staying with 5.1 sp1 until HP gets a stable version.

[Brian Hahne]

I never had any problems with 5.2 SP2

5.3 is a nightmare.

[Rancher]

I am also staying on 5.2, SP2.

[Hermann Wandratsch]

5.2 works with a restart every month

[SebastianT]

I am going with HP SIM 5.2 SP2 as well.

[Mahesh Shah_3]

I staying with
Systems Insight Manager 5.1 with SP1 - Build version: C.05.01.00.02

[Igor V Abzalov]

Why HP SIM 5.3 is nightmare ? Is 5.3 SP1 not so bad?