Dynamic Where Clause

I am trying to write a stored procedure usp_select using dynamic sql to select from a table. The stored procedure will accept the where clause and/or the where clause parameters. I have tried 3 different methods -

Method 1 -
exec usp_select @whereCondition='col1 like ''abc%'' and col2 = ''xyz'''
In usp_select, I'll build and execute the sql like -
set @sql = N'select * from table ' + @whereConition
exec sp_executesql @sql
(basically @sql becomes - select * from table where col1 like 'abc%' and col2 = 'xyz')

Method 2 -
exec usp_select @whereCondition='col1 like @p1 and col2 = @p2', @WhereParams='@p1=abc%,@p2=xyz'

In usp_select, I'll parse out the values in @WhereParams and then build and execute the sql like -

set @sql = N'declare @p1 nvarchar(10),
@p2 nvarchar(10);
set @p1 = ''' + @parsedValue1 + ''', @p2 = ''' + @parsedValue2 + '''; ' +

N'select col1 from table1 ' + @whereCondition

exec (@sql)

(basically @sql becomes - declare @p1 nvarchar(10), @p2 nvarchar(10);
set @pt = 'abc%', @p2 = 'xyz';
select col1 from table1 where col1 like @p1 and col2 = @p2)


Method 3 -

similar to Method 2 but exec(@sql) will be structured to become -
exec(declare @vparam nvarchar(100), @p1 nvarchar(10), @p2 nvarchar(10);

set @vparam='@p1 nvarchar(10), @p2 nvarchar(10)'

set @p1 = 'abc%', @p2 = 'xyz';

execute sp_executesql N''select col1 from table1 where col1 like @p1 and col2 = @p2', @vparam, @p, @p2)

When I run sql profiler on the 3 methods, method 1 and 2 always result in a Cache Miss on the entire sql structure.
On method 3, a Cache Miss always occurs on the first part of the sql, ie, the first 3 lines where I declare and set the variables. Then a Cache Hit will happen on the execute sp_executesql part.

Do I have any performance gain using method 3 with both a Cache Miss and a Cache Hit?

I hope this is not too confusing. Because I do not know the where condition to the select procedure and hardcoding the values as in method 1 always results in a Cache Miss, therefore, I come up with the ideas in Method 2 and 3.

Any advice would be appreciated.