I'd be wary of transferring from a final salary scheme and I'd make sure I got a least 3 sets of advice (including figures and maths that I really did understand) from IFAs (Independent Finacial Advisers).
Ask whoever is doing it to show you how much commision they are making on the deal (as I understand it they must tell you)
Do some basic maths – £100,000 in a money pot pension (ie not final salary) = about £4300 a year increasing with RPI final salary pension (male taking pension at age 65, no tax free cash).
Re one scheme – simplicty, ease of mangement – look up Equitable life pension victim on google.
Can second H&L – however if you put your bike into a shed and came back 20 years later would you expect it to be in perfect working order etc etc – well pension funds are similar – ie it's your money and you need to manage it. see trustnet.com – but in a nutshell if you're in a fund that charges 2% management fee a year and makes 3% on the fund you may not have the pension that you expect.